New Mexico County Creation Dates and Parent Counties: Difference between revisions

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{{Note|See an interactive outline map of [http://historical-county.newberry.org/website/Colorado/viewer.htm ''Colorado Historical Counties''] at Newberry Library site<ref>[http://historical-county.newberry.org/website/Colorado/viewer.htm ''Colorado Atlas of Historical County Boundaries'', John H. Long, Editor; Peggy Tuck Sinko, Associate Editor; Gordon DenBoer, Historical Compiler; Douglas Knox, Book Digitizing Director and Digital Compiler; Emily Kelley, Research Associate; Laura Rico-Beck, GIS Specialist; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant. Copyright The Newberry Library 2008.</ref> (Free) Enter a year, '''Refresh Map''', select '''zoom in''', then click on the map to enlarge it.}}
{{Note|See an interactive outline map of [http://historical-county.newberry.org/website/Colorado/viewer.htm ''Colorado Historical Counties''] at Newberry Library site<ref>[http://historical-county.newberry.org/website/Colorado/viewer.htm ''Colorado Atlas of Historical County Boundaries'', John H. Long, Editor; Peggy Tuck Sinko, Associate Editor; Gordon DenBoer, Historical Compiler; Douglas Knox, Book Digitizing Director and Digital Compiler; Emily Kelley, Research Associate; Laura Rico-Beck, GIS Specialist; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant. Copyright The Newberry Library 2008.</ref> (Free) Enter a year, '''Refresh Map''', select '''zoom in''', then click on the map to enlarge it.}}  


<br>
<br> {{Tip|Sort the table by '''Date Formed''' or by '''Parent Counties''' and check [http://historical-county.newberry.org/website/Colorado/documents/CO_County_Index.htm Boundary Changes] for interesting insights.}}  
{{Tip|Sort the table by '''Date Formed''' or by '''Parent Counties''' and check [http://historical-county.newberry.org/website/Colorado/documents/CO_County_Index.htm Boundary Changes] for interesting insights.}}
 
{| border="1" width="100%" class="sortable"
{| width="100%" border="1" class="sortable"
|-
|-
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" | '''Name of County'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Name of County'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" | '''Date Formed'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Date Formed'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" |'''Boundary<br>Changes'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Boundary<br>Changes'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" | '''Parent County'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Parent County'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" | '''Counties Created by Boundary Changes'''
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Counties Created by Boundary Changes'''
|-
|-
| [[Alamosa County, Colorado Genealogy|Alamosa]]  
| [[Alamosa County, Colorado Genealogy|Alamosa]]  
| 1913 Mar 08  
| 1913 Mar 08  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ALAMOSA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ALAMOSA Details]  
| Costilla, Conejos  
| Costilla, Conejos  
| none
| none
|-
|-
| [[Arapahoe County, Colorado Genealogy|Arapahoe]]  
| [[Arapahoe County, Colorado Genealogy|Arapahoe]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ARAPAHOE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ARAPAHOE Details]  
| Colorado Territory  
| Colorado Territory  
| Denver 1901, Washington 1887, Yuma 1889
| Denver 1901, Washington 1887, Yuma 1889
|-
|-
| [[Archuleta County, Colorado Genealogy|Archuleta]]  
| [[Archuleta County, Colorado Genealogy|Archuleta]]  
| 1885 Apr 14  
| 1885 Apr 14  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ARCHULETA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ARCHULETA Details]  
| Conejos  
| Conejos  
| none
| none
|-
|-
| [[Baca County, Colorado Genealogy|Baca]]  
| [[Baca County, Colorado Genealogy|Baca]]  
| 1889 Apr 16  
| 1889 Apr 16  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#BACA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#BACA Details]  
| Los Animas  
| Los Animas  
| none
| none
|-
|-
| [[Boulder County, Colorado Genealogy|Boulder]]  
| [[Boulder County, Colorado Genealogy|Boulder]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#BOULDER Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#BOULDER Details]  
| Colorado Territory  
| Colorado Territory  
| none
| none
|-
|-
| [[Broomfield County, Colorado Genealogy|City and County of Broomfield]]  
| [[Broomfield County, Colorado Genealogy|City and County of Broomfield]]  
| 2001 Nov 15  
| 2001 Nov 15  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#BROOMFIELD Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#BROOMFIELD Details]  
| nowrap="nowrap" | Adams, Boulder, Jefferson, Weld  
| nowrap="nowrap" | Adams, Boulder, Jefferson, Weld  
| none
| none
|-
|-
| Carbonate  
| Carbonate  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm# Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm# Details]  
| Colorado Territory  
| Colorado Territory  
| renamed Lake 1879
| renamed Lake 1879
|-
|-
| [[Chaffee County, Colorado Genealogy|Chaffee]]  
| [[Chaffee County, Colorado Genealogy|Chaffee]]  
| 1879 Feb 10  
| 1879 Feb 10  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CHAFFEE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CHAFFEE Details]  
| Lake  
| Lake  
| none
| none
|-
|-
| [[Cheyenne County, Colorado Genealogy|Cheyenne]]  
| [[Cheyenne County, Colorado Genealogy|Cheyenne]]  
| 1889 Mar 25  
| 1889 Mar 25  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CHEYENNE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CHEYENNE Details]  
| Bent, Elbert  
| Bent, Elbert  
| Kiowa 1889
| Kiowa 1889
|-
|-
| [[Clear Creek County, Colorado Genealogy|Clear Creek]]  
| [[Clear Creek County, Colorado Genealogy|Clear Creek]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CLEAR%20CREEK Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CLEAR%20CREEK Details]  
| Colorado Territory  
| Colorado Territory  
| none
| none
|-
|-
| [[Conejos County, Colorado Genealogy|Conejos]]  
| [[Conejos County, Colorado Genealogy|Conejos]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CONEJOS Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CONEJOS Details]  
| Colorado Territory  
| Colorado Territory  
| Alamosa 1913, Archuleta 1885, Hinsdale 1874, La Plata 1874, Rio Grande 1874
| Alamosa 1913, Archuleta 1885, Hinsdale 1874, La Plata 1874, Rio Grande 1874
|-
|-
| [[Costilla County, Colorado Genealogy|Costilla]]  
| [[Costilla County, Colorado Genealogy|Costilla]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#COSTILLA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#COSTILLA Details]  
| Colorado Territory  
| Colorado Territory  
| Alamosa 1913, Rio Grande 1874, Saguache 1866
| Alamosa 1913, Rio Grande 1874, Saguache 1866
|-
|-
| [[Crowley County, Colorado Genealogy|Crowley]]  
| [[Crowley County, Colorado Genealogy|Crowley]]  
| <br> rap no  
| <br> rap no  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CROWLEY Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CROWLEY Details]  
| Bent, Otero  
| Bent, Otero  
| none
| none
|-
|-
| [[Custer County, Colorado Genealogy|Custer]]  
| [[Custer County, Colorado Genealogy|Custer]]  
| 1877 Mar 09  
| 1877 Mar 09  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CUSTER Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CUSTER Details]  
| Fremont  
| Fremont  
| none
| none
|-
|-
| [[Delta County, Colorado Genealogy|Delta]]  
| [[Delta County, Colorado Genealogy|Delta]]  
| 1883 Feb 11  
| 1883 Feb 11  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#DELTA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#DELTA Details]  
| Gunnison  
| Gunnison  
| none
| none
|-
|-
| [[Denver County, Colorado Genealogy|City and County of Denver]]  
| [[Denver County, Colorado Genealogy|City and County of Denver]]  
| 1901 Mar 18  
| 1901 Mar 18  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#DENVER Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#DENVER Details]  
| Arapahoe  
| Arapahoe  
| none
| none
|-
|-
| [[Dolores County, Colorado Genealogy|Dolores]]  
| [[Dolores County, Colorado Genealogy|Dolores]]  
| 1881 Feb 19  
| 1881 Feb 19  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#DOLORES Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#DOLORES Details]  
| Ouray  
| Ouray  
| none
| none
|-
|-
| [[Douglas County, Colorado Genealogy|Douglas]]  
| [[Douglas County, Colorado Genealogy|Douglas]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#DOUGLAS Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#DOUGLAS Details]  
| Colorado Territory  
| Colorado Territory  
| Elbert 1874
| Elbert 1874
|-
|-
| [[Eagle County, Colorado Genealogy|Eagle]]  
| [[Eagle County, Colorado Genealogy|Eagle]]  
| 1883 Feb 11  
| 1883 Feb 11  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#EAGLE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#EAGLE Details]  
| Summit  
| Summit  
| none
| none
|-
|-
| [[Elbert County, Colorado Genealogy|Elbert]]  
| [[Elbert County, Colorado Genealogy|Elbert]]  
| 1874 Feb 02  
| 1874 Feb 02  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ELBERT Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ELBERT Details]  
| Douglas  
| Douglas  
| Kit Carson 1889, Lincoln 1889
| Kit Carson 1889, Lincoln 1889
|-
|-
| [[El Paso County, Colorado Genealogy|El Paso]]  
| [[El Paso County, Colorado Genealogy|El Paso]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#El%20PASO Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#El%20PASO Details]  
| Colorado Territory  
| Colorado Territory  
| Teller 1899
| Teller 1899
|-
|-
| [[Fremont County, Colorado Genealogy|Fremont]]  
| [[Fremont County, Colorado Genealogy|Fremont]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#FREMONT Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#FREMONT Details]  
| Colorado Territory  
| Colorado Territory  
| Custer 1877
| Custer 1877
|-
|-
| [[Garfield County, Colorado Genealogy|Garfield]]  
| [[Garfield County, Colorado Genealogy|Garfield]]  
| 1883 Feb 10  
| 1883 Feb 10  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#GARFIELD Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#GARFIELD Details]  
| Summit  
| Summit  
| none
| none
|-
|-
| [[Gilpin County, Colorado Genealogy|Gilpin]]  
| [[Gilpin County, Colorado Genealogy|Gilpin]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#GILPIN Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#GILPIN Details]  
| Colorado Territory  
| Colorado Territory  
| none
| none
|-
|-
| Guadalupe  
| Guadalupe  
| 1861 Nov 01
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CONEJOS Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#CONEJOS Details]  
| Colorado Territory  
| Colorado Territory  
| renamed Conejos 1861
| renamed Conejos 1861
|-
|-
| [[Gunnison County, Colorado Genealogy|Gunnison]]  
| [[Gunnison County, Colorado Genealogy|Gunnison]]  
| 1877 Mar 09  
| 1877 Mar 09  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#GUNNISON Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#GUNNISON Details]  
| Lake  
| Lake  
| Delta 1883, Mesa 1883, Montrose 1883, Pitkin 1881
| Delta 1883, Mesa 1883, Montrose 1883, Pitkin 1881
|-
|-
| [[Hinsdale County, Colorado Genealogy|Hinsdale]]  
| [[Hinsdale County, Colorado Genealogy|Hinsdale]]  
| 1874 Feb 10  
| 1874 Feb 10  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#HINSDALE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#HINSDALE Details]  
| Conejos  
| Conejos  
| Mineral 1893, Ouray 1877, Uncompahgre 1877
| Mineral 1893, Ouray 1877, Uncompahgre 1877
|-
|-
| [[Huerfano County, Colorado Genealogy|Huerfano]]  
| [[Huerfano County, Colorado Genealogy|Huerfano]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#HUERFANO Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#HUERFANO Details]  
| Colorado Territory  
| Colorado Territory  
| Los Animas 1866
| Los Animas 1866
|-
|-
| [[Jackson County, Colorado Genealogy|Jackson]]  
| [[Jackson County, Colorado Genealogy|Jackson]]  
| <br> May 05  
| <br> May 05  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#JACKSON Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#JACKSON Details]  
| Grand, Larimer  
| Grand, Larimer  
| none
| none
|-
|-
| [[Jefferson County, Colorado Genealogy|Jefferson]]  
| [[Jefferson County, Colorado Genealogy|Jefferson]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#JEFFERSON Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#JEFFERSON Details]  
| Colorado Territory  
| Colorado Territory  
| none
| none
|-
|-
| [[Kiowa County, Colorado Genealogy|Kiowa]]  
| [[Kiowa County, Colorado Genealogy|Kiowa]]  
| 1889 Apr 11  
| 1889 Apr 11  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#KIOWA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#KIOWA Details]  
| Cheyenne, Bent  
| Cheyenne, Bent  
| none
| none
|-
|-
| [[Kit Carson County, Colorado Genealogy|Kit Carson]]  
| [[Kit Carson County, Colorado Genealogy|Kit Carson]]  
| 1889 Apr 11  
| 1889 Apr 11  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#KIT%20CARSON Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#KIT%20CARSON Details]  
| Elbert  
| Elbert  
| none
| none
|-
|-
| [[Lake County, Colorado Genealogy|Lake]]  
| [[Lake County, Colorado Genealogy|Lake]]  
| 1879 Feb 10  
| 1879 Feb 10  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LAKE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LAKE Details]  
| renamed from Carbonate  
| renamed from Carbonate  
| Chaffee 1879, Gunnison 1877
| Chaffee 1879, Gunnison 1877
|-
|-
| [[La Plata County, Colorado Genealogy|La Plata]]  
| [[La Plata County, Colorado Genealogy|La Plata]]  
| 1874 Feb 10  
| 1874 Feb 10  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LA%20PLATA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LA%20PLATA Details]  
| Conejos, Lake  
| Conejos, Lake  
| Montezuma 1889, San Juan 1876
| Montezuma 1889, San Juan 1876
|-
|-
| [[Larimer County, Colorado Genealogy|Larimer]]  
| [[Larimer County, Colorado Genealogy|Larimer]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LARIMER Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LARIMER Details]  
| Colorado Territory  
| Colorado Territory  
| Jackson 1909
| Jackson 1909
|-
|-
| [[Las Animas County, Colorado Genealogy|Las Animas]]  
| [[Las Animas County, Colorado Genealogy|Las Animas]]  
| 1866 Nov 09  
| 1866 Nov 09  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LAS%20ANIMAS Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LAS%20ANIMAS Details]  
| Huerfano  
| Huerfano  
| Baca 1889
| Baca 1889
|-
|-
| [[Lincoln County, Colorado Genealogy|Lincoln]]  
| [[Lincoln County, Colorado Genealogy|Lincoln]]  
| 1889 Apr 11  
| 1889 Apr 11  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LINCOLN Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LINCOLN Details]  
| Elbert  
| Elbert  
| none
| none
|-
|-
| [[Logan County, Colorado Genealogy|Logan]]  
| [[Logan County, Colorado Genealogy|Logan]]  
| 1887 Feb 02  
| 1887 Feb 02  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LOGAN Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#LOGAN Details]  
| Weld  
| Weld  
| Phillips 1889, Sedgwick 1889
| Phillips 1889, Sedgwick 1889
|-
|-
| [[Mesa County, Colorado Genealogy|Mesa]]  
| [[Mesa County, Colorado Genealogy|Mesa]]  
| 1883 Feb 14  
| 1883 Feb 14  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MESA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MESA Details]  
| Gunnison  
| Gunnison  
| none
| none
|-
|-
| [[Mineral County, Colorado Genealogy|Mineral]]  
| [[Mineral County, Colorado Genealogy|Mineral]]  
| 1893 Mar 27  
| 1893 Mar 27  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MINERAL Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MINERAL Details]  
| Hinsdale  
| Hinsdale  
| none
| none
|-
|-
| [[Moffat County, Colorado Genealogy|Moffat]]  
| [[Moffat County, Colorado Genealogy|Moffat]]  
| 1911 Feb 27  
| 1911 Feb 27  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MOFFAT Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MOFFAT Details]  
| Routt  
| Routt  
| none
| none
|-
|-
| [[Montezuma County, Colorado Genealogy|Montezuma]]  
| [[Montezuma County, Colorado Genealogy|Montezuma]]  
| 1889 Apr 16  
| 1889 Apr 16  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MONTEZUMA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MONTEZUMA Details]  
| La Plata  
| La Plata  
| none
| none
|-
|-
| [[Montrose County, Colorado Genealogy|Montrose]]  
| [[Montrose County, Colorado Genealogy|Montrose]]  
| 1883 Feb 11  
| 1883 Feb 11  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MONTROSE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MONTROSE Details]  
| Gunnison  
| Gunnison  
| none
| none
|-
|-
| [[Morgan County, Colorado Genealogy|Morgan]]  
| [[Morgan County, Colorado Genealogy|Morgan]]  
| 889 Feb 19  
| 889 Feb 19  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MORGAN Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#MORGAN Details]  
| Weld  
| Weld  
| none
| none
|-
|-
| [[Otero County, Colorado Genealogy|Otero]]  
| [[Otero County, Colorado Genealogy|Otero]]  
| 1889 Feb 19  
| 1889 Feb 19  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#OTERO Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#OTERO Details]  
| Bent  
| Bent  
| Crowley 1911
| Crowley 1911
|-
|-
| [[Ouray County, Colorado Genealogy|Ouray]]  
| [[Ouray County, Colorado Genealogy|Ouray]]  
| 1883 Mar 02  
| 1883 Mar 02  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#OURAY Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#OURAY Details]  
| nowrap="nowrap" | renamed from Uncompahgre  
| nowrap="nowrap" | renamed from Uncompahgre  
| Dolores 1881, San Miguel 1861
| Dolores 1881, San Miguel 1861
|-
|-
| [[Park County, Colorado Genealogy|Park]]  
| [[Park County, Colorado Genealogy|Park]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PARK Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PARK Details]  
| Colorado Territory  
| Colorado Territory  
| none
| none
|-
|-
| [[Phillips County, Colorado Genealogy|Phillips]]  
| [[Phillips County, Colorado Genealogy|Phillips]]  
| 1889 Mar 27  
| 1889 Mar 27  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PHILLIPS Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PHILLIPS Details]  
| Logan  
| Logan  
| none
| none
|-
|-
| [[Pitkin County, Colorado Genealogy|Pitkin]]  
| [[Pitkin County, Colorado Genealogy|Pitkin]]  
| 1881 Feb 23  
| 1881 Feb 23  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PITKIN Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PITKIN Details]  
| Gunnison  
| Gunnison  
| none
| none
|-
|-
| [[Prowers County, Colorado Genealogy|Prowers]]  
| [[Prowers County, Colorado Genealogy|Prowers]]  
| 1889 Apr 11  
| 1889 Apr 11  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PROWERS Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PROWERS Details]  
| Bent  
| Bent  
| none
| none
|-
|-
| [[Pueblo County, Colorado Genealogy|Pueblo]]  
| [[Pueblo County, Colorado Genealogy|Pueblo]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PUEBLO Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#PUEBLO Details]  
| Colorado Territory  
| Colorado Territory  
| none
| none
|-
|-
| [[Rio Blanco County, Colorado Genealogy|Rio Blanco]]  
| [[Rio Blanco County, Colorado Genealogy|Rio Blanco]]  
| 1889 Mar 25  
| 1889 Mar 25  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#RIO%20BLANCO Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#RIO%20BLANCO Details]  
| Summit  
| Summit  
| none
| none
|-
|-
| [[Rio Grande County, Colorado Genealogy|Rio Grande]] (del Norte)  
| [[Rio Grande County, Colorado Genealogy|Rio Grande]] (del Norte)  
| 1874 Feb 10  
| 1874 Feb 10  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#RIO%20GRANDE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#RIO%20GRANDE Details]  
| Conejos, Costilla  
| Conejos, Costilla  
| none
| none
|-
|-
| [[Routt County, Colorado Genealogy|Routt]]  
| [[Routt County, Colorado Genealogy|Routt]]  
| 1877 Jan 29  
| 1877 Jan 29  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ROUTT Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#ROUTT Details]  
| Grand  
| Grand  
| Moffatt 1911
| Moffatt 1911
|-
|-
| [[Saguache County, Colorado Genealogy|Saguache]]  
| [[Saguache County, Colorado Genealogy|Saguache]]  
| 1866 Dec 29  
| 1866 Dec 29  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SAGUACHE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SAGUACHE Details]  
| Costilla  
| Costilla  
| none
| none
|-
|-
| [[San Juan County, Colorado Genealogy|San Juan]]  
| [[San Juan County, Colorado Genealogy|San Juan]]  
| 1876 Jan 31  
| 1876 Jan 31  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SAN%20JUAN Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SAN%20JUAN Details]  
| La Plata  
| La Plata  
| Uncompahgre 1877
| Uncompahgre 1877
|-
|-
| [[San Miguel County, Colorado Genealogy|San Miguel]]  
| [[San Miguel County, Colorado Genealogy|San Miguel]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SAN%20MIGUEL Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SAN%20MIGUEL Details]  
| Colorado Territory  
| Colorado Territory  
| none
| none
|-
|-
| [[Sedgwick County, Colorado Genealogy|Sedgwick]]  
| [[Sedgwick County, Colorado Genealogy|Sedgwick]]  
| 1889 Apr 09  
| 1889 Apr 09  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SEDGWICK Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SEDGWICK Details]  
| Logan  
| Logan  
| none
| none
|-
|-
| [[Summit County, Colorado Genealogy|Summit]]  
| [[Summit County, Colorado Genealogy|Summit]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SUMMIT Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#SUMMIT Details]  
| Colorado Territory  
| Colorado Territory  
| Eagle 1883, Garfield 1883, Grand 1874, Rio Blanco 1889
| Eagle 1883, Garfield 1883, Grand 1874, Rio Blanco 1889
|-
|-
| [[Teller County, Colorado Genealogy|Teller]]  
| [[Teller County, Colorado Genealogy|Teller]]  
| 1899 Mar 23  
| 1899 Mar 23  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#TELLER Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#TELLER Details]  
| El Paso  
| El Paso  
| none
| none
|-
|-
| [[Uncompahgre County, Colorado Genealogy|Uncompahgre]]  
| [[Uncompahgre County, Colorado Genealogy|Uncompahgre]]  
| 1877 Jan 18  
| 1877 Jan 18  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#UNCOMPAHGRE Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#UNCOMPAHGRE Details]  
| Hinsdale, San Juan  
| Hinsdale, San Juan  
| renamed Ouray 1883
| renamed Ouray 1883
|-
|-
| [[Washington County, Colorado Genealogy|Washington]]  
| [[Washington County, Colorado Genealogy|Washington]]  
| 1887 Feb 09  
| 1887 Feb 09  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#WASHINGTON Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#WASHINGTON Details]  
| Weld, Arapahoe  
| Weld, Arapahoe  
| Yuma 1889
| Yuma 1889
|-
|-
| [[Weld County, Colorado Genealogy|Weld]]  
| [[Weld County, Colorado Genealogy|Weld]]  
| 1861 Nov 01  
| 1861 Nov 01  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#WELD Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#WELD Details]  
| Colorado Territory  
| Colorado Territory  
| Logan 1887, Morgan 1889, Washington 1887
| Logan 1887, Morgan 1889, Washington 1887
|-
|-
| [[Yuma County, Colorado Genealogy|Yuma]]  
| [[Yuma County, Colorado Genealogy|Yuma]]  
| 1889 Mar 15  
| 1889 Mar 15  
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#YUMA Details]
| [http://publications.newberry.org/ahcbp/documents/CO_Individual_County_Chronologies.htm#YUMA Details]  
| Washington, Arapahoe  
| Washington, Arapahoe  
| none
| none
|}
|}
0
==References==
[[Category: United States County Creations]]
{{Reflist}}
[[Category:United_States_County_Creations]]

Revision as of 17:52, 5 June 2015


Name of County Date Formed Boundary
Changes
Parent County Counties Created by Boundary Changes
Alamosa 1913 Mar 08 Details Costilla, Conejos none
Arapahoe 1861 Nov 01 Details Colorado Territory Denver 1901, Washington 1887, Yuma 1889
Archuleta 1885 Apr 14 Details Conejos none
Baca 1889 Apr 16 Details Los Animas none
Boulder 1861 Nov 01 Details Colorado Territory none
City and County of Broomfield 2001 Nov 15 Details Adams, Boulder, Jefferson, Weld none
Carbonate 1861 Nov 01 Details Colorado Territory renamed Lake 1879
Chaffee 1879 Feb 10 Details Lake none
Cheyenne 1889 Mar 25 Details Bent, Elbert Kiowa 1889
Clear Creek 1861 Nov 01 Details Colorado Territory none
Conejos 1861 Nov 01 Details Colorado Territory Alamosa 1913, Archuleta 1885, Hinsdale 1874, La Plata 1874, Rio Grande 1874
Costilla 1861 Nov 01 Details Colorado Territory Alamosa 1913, Rio Grande 1874, Saguache 1866
Crowley
rap no
Details Bent, Otero none
Custer 1877 Mar 09 Details Fremont none
Delta 1883 Feb 11 Details Gunnison none
City and County of Denver 1901 Mar 18 Details Arapahoe none
Dolores 1881 Feb 19 Details Ouray none
Douglas 1861 Nov 01 Details Colorado Territory Elbert 1874
Eagle 1883 Feb 11 Details Summit none
Elbert 1874 Feb 02 Details Douglas Kit Carson 1889, Lincoln 1889
El Paso 1861 Nov 01 Details Colorado Territory Teller 1899
Fremont 1861 Nov 01 Details Colorado Territory Custer 1877
Garfield 1883 Feb 10 Details Summit none
Gilpin 1861 Nov 01 Details Colorado Territory none
Guadalupe 1861 Nov 01 Details Colorado Territory renamed Conejos 1861
Gunnison 1877 Mar 09 Details Lake Delta 1883, Mesa 1883, Montrose 1883, Pitkin 1881
Hinsdale 1874 Feb 10 Details Conejos Mineral 1893, Ouray 1877, Uncompahgre 1877
Huerfano 1861 Nov 01 Details Colorado Territory Los Animas 1866
Jackson
May 05
Details Grand, Larimer none
Jefferson 1861 Nov 01 Details Colorado Territory none
Kiowa 1889 Apr 11 Details Cheyenne, Bent none
Kit Carson 1889 Apr 11 Details Elbert none
Lake 1879 Feb 10 Details renamed from Carbonate Chaffee 1879, Gunnison 1877
La Plata 1874 Feb 10 Details Conejos, Lake Montezuma 1889, San Juan 1876
Larimer 1861 Nov 01 Details Colorado Territory Jackson 1909
Las Animas 1866 Nov 09 Details Huerfano Baca 1889
Lincoln 1889 Apr 11 Details Elbert none
Logan 1887 Feb 02 Details Weld Phillips 1889, Sedgwick 1889
Mesa 1883 Feb 14 Details Gunnison none
Mineral 1893 Mar 27 Details Hinsdale none
Moffat 1911 Feb 27 Details Routt none
Montezuma 1889 Apr 16 Details La Plata none
Montrose 1883 Feb 11 Details Gunnison none
Morgan 889 Feb 19 Details Weld none
Otero 1889 Feb 19 Details Bent Crowley 1911
Ouray 1883 Mar 02 Details renamed from Uncompahgre Dolores 1881, San Miguel 1861
Park 1861 Nov 01 Details Colorado Territory none
Phillips 1889 Mar 27 Details Logan none
Pitkin 1881 Feb 23 Details Gunnison none
Prowers 1889 Apr 11 Details Bent none
Pueblo 1861 Nov 01 Details Colorado Territory none
Rio Blanco 1889 Mar 25 Details Summit none
Rio Grande (del Norte) 1874 Feb 10 Details Conejos, Costilla none
Routt 1877 Jan 29 Details Grand Moffatt 1911
Saguache 1866 Dec 29 Details Costilla none
San Juan 1876 Jan 31 Details La Plata Uncompahgre 1877
San Miguel 1861 Nov 01 Details Colorado Territory none
Sedgwick 1889 Apr 09 Details Logan none
Summit 1861 Nov 01 Details Colorado Territory Eagle 1883, Garfield 1883, Grand 1874, Rio Blanco 1889
Teller 1899 Mar 23 Details El Paso none
Uncompahgre 1877 Jan 18 Details Hinsdale, San Juan renamed Ouray 1883
Washington 1887 Feb 09 Details Weld, Arapahoe Yuma 1889
Weld 1861 Nov 01 Details Colorado Territory Logan 1887, Morgan 1889, Washington 1887
Yuma 1889 Mar 15 Details Washington, Arapahoe none

References[edit | edit source]

  1. [http://historical-county.newberry.org/website/Colorado/viewer.htm Colorado Atlas of Historical County Boundaries, John H. Long, Editor; Peggy Tuck Sinko, Associate Editor; Gordon DenBoer, Historical Compiler; Douglas Knox, Book Digitizing Director and Digital Compiler; Emily Kelley, Research Associate; Laura Rico-Beck, GIS Specialist; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant. Copyright The Newberry Library 2008.