| Name of County
|
Date Formed
|
Boundary Changes
|
Parent County
|
Counties Created by Boundary Changes
|
| Adair
|
1907 Jul 16
|
Details
|
Cherokee Lands
|
none
|
| Alfalfa
|
1907 Jul 16
|
Details
|
Woods
|
none
|
| Atoka
|
1907 Jul 16
|
Details
|
Choctaw Lands
|
none
|
| Beaver
|
1890 0 18
|
Details
|
Oklahoma Territory
|
Cimarron 1907, Texas 1907
|
| Beckham
|
1907 Jul 16
|
Details
|
Roger Mills
|
none
|
| Blaine
|
1892 Apr 19
|
Details
|
Cheyenne, Arapaho land
|
none
|
| Bryan
|
1907 Jul 16
|
Details
|
Choctaw Lands
|
none
|
| Caddo
|
1901 Aug 05
|
Details
|
Kowa, Comanche,Apache, Wichita, Caddo lands
|
Grady 1907
|
| Canadian
|
1890 18 Ma
|
Details
|
Oklahoma Territory
|
none
|
| Carter
|
1907 Jul 16
|
Details
|
Chickasaw lands
|
none
|
| Cherokee
|
1907 Jul 16
|
Details
|
Tahlequah District
|
Delaware 1907
|
| Choctaw
|
1907 Jul 16
|
Details
|
Choctaw lands
|
none
|
| Cimarron
|
1907 Jul 16
|
Details
|
Beaver
|
none
|
| Cleveland
|
1890 18 Ma
|
Details
|
Oklahoma Territory
|
none
|
| Coal
|
1907 Jul 16
|
Details
|
Choctaw lands
|
none
|
| Comanche
|
1901 Aug 05
|
Details
|
Kiowa, Comanche lands
|
Cotton 1912, Grady 1907, Jefferson 1907, Kiowa 1907, Stephens 1907
|
| Cotton
|
1912 Aug 27
|
Details
|
Comanche
|
none
|
| Craig
|
907 Jul 16
|
Details
|
Cherokee lands
|
none
|
| Creek
|
1907 Jul 16
|
Details
|
Creek lands
|
Muskogee 1907
|
| Custer
|
1892 Aug 19
|
Details
|
Cheyenne & Arapaho land opening
|
none
|
| Day
|
1892 Apr 19
|
Details
|
Cheyenne & Arapaho land opening
|
absorbed by Ellis 1907
|
| Delaware
|
1907 Jul 16
|
Details
|
Cherokee
|
none
|
| Dewey
|
1892 Apr 19
|
Details
|
Cheyenne & Arapaho land opening
|
none
|
| Ellis
|
1907 Jul 16
|
Details
|
Day, Woodward
|
none
|
| Garfield
|
1893 sep 16
|
Details
|
Cherokee Outlet land
|
none
|
| Garvin
|
1907 Jul 16
|
Details
|
Chickasaw lands
|
none
|
| Grady
|
1907 Jul 16
|
Details
|
Caddo, Comanche lands
|
none
|
| Grant
|
1893 Sep 16
|
Details
|
Cherokee Outletland
|
none
|
| Greer
|
1886 6 18
|
Details
|
Cherokee lands
|
Harmon 1909, Jackson 1907
|
| Harmon
|
1909 Jun 02
|
Details
|
Greer, Jackson
|
none
|
| Harper
|
1907 Jul 16
|
Details
|
Indian lands, Woods, Woodward
|
none
|
| Haskell
|
1907 Jul 16
|
Details
|
Choctaw lands
|
none
|
| Hughes
|
1907 Jul 16
|
Details
|
Creek lands
|
none
|
| Jackson
|
1907 Jul 16
|
Details
|
Greer
|
Harmon 1909
|
| Jefferson
|
1907 Jul 16
|
Details
|
Comanche, Chickasaw lands
|
none
|
| Johnston
|
1907 Jul 16
|
Details
|
Chickasaw lands
|
none
|
| Kay
|
1893 Sep 16
|
Details
|
Cherokee Outlet land
|
none
|
| Kingfisher
|
1890 18 Ma
|
Details
|
Oklahoma Territory
|
none
|
| Kiowa
|
1901 Aug 05
|
Details
|
Kiowa, Comanche, Apache, Wichita, Caddo lands
|
Comanche 1907
|
| Latimer
|
1907 Jul 16
|
Details
|
Choctaw lands
|
none
|
| LeFlore
|
1907 Jul 16
|
Details
|
Choctaw lands
|
none
|
| Lincoln
|
1893 Sep 22
|
Details
|
Oklahoma Territory
|
none
|
| Logan
|
1890 18 Ma
|
Details
|
Oklahoma Territory
|
none
|
| Love
|
1907 Jul 16
|
Details
|
Chickasaw Territory
|
none
|
| Major
|
1907 Jul 16
|
Details
|
Woods
|
none
|
| Marshall
|
1907 Jul 16
|
Details
|
Chickasaw lands
|
none
|
| Mayes
|
1907 Jul 16
|
Details
|
Cherokee lands
|
none
|
| McClain
|
1907 Jul 16
|
Details
|
Chickasaw lands
|
none
|
| McCurtain
|
1907 Jul 16
|
Details
|
Choctaw lands
|
none
|
| McIntosh
|
1907 Jul 16
|
Details
|
Creek lans
|
none
|
| Murray
|
1907 Jul 16
|
Details
|
Chickasaw lands
|
none
|
| Muskogee
|
1907 Jul 16
|
Details
|
Creek lands
|
none
|
| Noble
|
1907 Jul 16
|
Details
|
Cherokee Outlet land
|
none
|
| Nowata
|
1907 Jul 16
|
Details
|
Cherokee lands
|
none
|
| Okfuskee
|
1907 Jul 16
|
Details
|
Creek lands
|
none
|
| Oklahoma
|
1907 Jul 16
|
Details
|
Oklahoma Territory
|
none
|
| Okmulgee
|
1907 Jul 16
|
Details
|
Creek lands
|
none
|
| Osage
|
1907 Jul 16
|
Details
|
Osage lands
|
none
|
| Ottawa
|
1907 Jul 16
|
Details
|
Cherokee Nation
|
none
|
| Pawnee
|
1893 Sep 16
|
Details
|
Cherokee Outlet land
|
none
|
| Pittsburg
|
1907 Jul 16
|
Details
|
Choctaw lands
|
none
|
| Pontotoc
|
1907 Jul 16
|
Details
|
Chickasaw lands
|
none
|
| Pottawatomie
|
1891 Sep 22
|
Details
|
Oklahoma Territory
|
none
|
| Pushmataha
|
1907 Jul 16
|
Details
|
Choctaw lands
|
none
|
| Roger Mills
|
1892 Apr 19
|
Details
|
Cheyene, Araphoe land
|
Beckham 1907
|
| Rogers
|
1907 Jul 16
|
Details
|
Cherokee Nation
|
none
|
| Seminole
|
1907 Jul 16
|
Details
|
Seminole lands
|
none
|
| Sequoyah
|
1907 Jul 16
|
Details
|
Cherokee lands
|
none
|
| Stephens
|
1907 Jul 16
|
Details
|
Comanche
|
none
|
| Texas
|
1907 Jul 16
|
Details
|
Beaver
|
none
|
| Tillman
|
1907 Jul 16
|
Details
|
Comanche
|
none
|
| Tulsa
|
1907 Jul 16
|
Details
|
Creek lands
|
none
|
| Wagoner
|
1907 Jul 16
|
Details
|
Creek lands
|
none
|
| Washington
|
1907 Jul 16
|
Details
|
Cherokee lands
|
none
|
| Washita
|
1892 Apr 19
|
Details
|
Cheyenne, Arapaho
|
none
|
| Woods
|
1893 Sep 16
|
Details
|
Cherokee Outlet land
|
Alfalfa 1907, Harper 1907, Major 1907
|
| Woodward
|
1893 Sep 16
|
Details
|
Cherokee Outlet land
|
Ellis 1907, Harper 1907
|