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Indiana County Creation Dates and Parent Counties

Note
 See an interactive outline map of Indiana Historical Counties at Newberry Library site.[1] Select a year and the map will display the historical county boundaries. Click on map image for county details.


Tip: Sort the table by Date Formed or by Parent Counties and check Boundary Changes for interesting insights.
Name of County Date Formed Boundary
Changes 		Parent County Counties Created by Boundary Changes
Adams 1835 Feb 07 Details Warren none
Allen 1823 Dec 17 Details Indian lands DeKalb 1835, Wells 1835
Bartholomew 1821 Jan 08 Details Indian lands none
Benton 1840 Feb 18 Details Indian lands none
Blackford 1838 Feb 15 Details Jay none
Boone 1831 Jan 29 Details Indian lands none
Brown 1836 Feb 04 Details Morgan, Johnson, Monroe, Lawrence none
Carroll 1828 Jan 07 Details Indian lands White 1834
Cass 1828 Dec 18 Details Indian lands Miami 1832, Pulask 1835
Clark 1801 Feb 03 Details Knox Floyd 1819, Scott 1820
Clay 1825 Feb 12 Details Indian lands none
Clinton 1830 Jan 29 Details Indian lands none
Crawford 1818 Jan 29 Details Harrison Orange 1815
Daviess 1816 Jan 24 Details Indian lands none
Dearborn 1803 Mar 07 Details Indiana Territory Ohio 1844, Orange 1815
Decatur 1821 Dec 31 Details Indian lands none
DeKalb 1835 Feb 07 Details Allen none
Delaware 1827 Jan 26 Details Indian lands Grant 1831, Morgan 1822
Dubois 1817 Dec 20 Details Orange, Perry none
Elkhart 1830 Jan 29 Details Indian lands Noble 1835
Fayette 1818 Dec 28 Details Wayne Madison 1823
Floyd 1819 Jan 02 Details Harrison, Clark none
Fountain 1825 Dec 20 Details Montgomery none
Franklin 1810 Nov 27 Details Wayne, Ripley Rush 1821
Fulton 1835 Feb 07 Details Indian lands none
Gibson 1813 Mar 09 Details Knox none
Grant 1831 Feb 10 Details Delaware Huntington 1832
Greene 1821 Jan 05 Details Knox none
Hamilton 1823 Jan 08 Details Hancock, Marion Tipton 1844
Hancock 1827 Jan 26 Details Madison Hamilton 1823
Harrison 1808 Oct 11 Details Indiana Territory Crawford 1818, Floyd 1819, Perry 1814
Hendricks 1823 Dec 20 Details Indian lands none
Henry 1821 Dec 31 Details Indian lands none
Howard 1846 Dec 28 Details renamed from Richardville none
Huntington 1832 Feb 02 Details Grant Wabash 1832, Wells 1835, Whitley 1835
Jackson 1815 Dec 18 Details Washington Scott 1820
Jasper 1835 Feb 07 Details Indian lands Newton 1835
Jay 1835 Feb 07 Details Randolph Blackford 1838
Jefferson 1810 Nov 23 Details Indian lands none
Jennings 1816 Dec 27 Details Indian lands none
Johnson 1822 Dec 31 Details Indian lands Brown 1836
Knox 1790 Jun 20 Details Northwest Territory Clark 1801, Gibson 1813, Green 1821, Posey 1814
Kosciusko 1835 Feb 07 Details Indian lands none
LaGrange 1832 Feb 02 Details state lands none
Lake 1836 Jan 28 Details Porter, Newton none
LaPorte 1832 Jan 09 Details Indian lands none
Lawrence 1818 Jan 07 Details Orange Brown 1836
Madison 1823 Jan 04 Details Fayette Hancock 1827
Marion 1821 Dec 31 Details Ohio Hamilton 1823
Marshall 1835 Feb 07 Details Indian lands Starke 1835
Martin 1820 Jan 17 Details Indian lands none
Miami 1832 Feb 02 Details Cass none
Monroe 1818 Jan 14 Details Orange Brown 1836, Morgan 1821
Montgomery 1822 Dec 21 Details Indian lands Fountain 1825, Tippecanoe 1826
Morgan 1821 Dec 31 Details Monroe Brown 1836
Newton 1835 Feb 07 Details Jasper Lake 1836
Noble 1835 Feb 07 Details Elkhart none
Ohio 1844 Jan 04 Details Dearborn Marion 1821
Orange 1815 Dec 26 Details Dearborn Dubois 1817, Lawrence 1818, Monroe 1818
Owen 1818 Dec 21 Details Indian lands none
Parke 1821 Jan 09 Details Indian lands Vermillion 1824
Perry 1814 Sep 07 Details Harrison, Warrick Dubois 1817
Pike 1816 Dec 21 Details Indian lands none
Porter 1835 Feb 07 Details Indian lands Lake 1836
Posey 1814 Sep 07 Details Knox none
Pulaski 1835 Feb 07 Details Cass none
Putnam 1821 Dec 31 Details Indian lands none
Randolph (new) 1818 Jan 10 Details Wayne Jay 1835
Ripley 1816 Dec 27 Details Indian lands Franklin 1810
Rush 1821 Dec 31 Details Franklin none
St. Joseph 1830 Jan 29 Details Indian lands none
Scott 1820 Jan 12 Details Clark, Jackson none
Shelby 1821 Dec 31 Details Indian lands none
Spencer 1818 Jan 10 Details Warwick none
Starke 1835 Feb 07 Details Marshall none
Steuben 1835 Feb 07 Details Indian lands none
Sullivan 1816 Dec 30 Details Indiana Territory none
Switzerland 1814 sep 07 Details Indian lands none
Tippecanoe 1826 Jan 20 Details Montgomery none
Tipton 1844 Jan 15 Details Hamilton none
Union 1821 Jan 05 Details Wayne none
Vanderburgh 1818 Jan 07 Details Gibson, Warrick, Posey none
Vermillion 1824 Jan 02 Details Parke none
Vigo 1818 Jan 21 Details Indian lands none
Wabash 1832 Feb 2 Details Adams, Cass, Grant none
Warren 1827 Jan 19 Details Indian lands Adams 1835
Warrick 1813 Apr 1 Details Indian Territory/Knox none
Washington 1813 Dec 21 Details Indian lands Jackson 1815
Wayne 1811 Jan 1 Details Indiana Territory Clark, Dearborn, Knox
Wells 1835 Feb 07 Details Huntington, Allen none
White 1834 Feb 01 Details Carroll none
Whitley 1835 Feb 07 Details Huntington none
  1. ↑ Indiana 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.
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