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County All

Modern Counties, Counties of Oklahoma Territory [O. T.], and 

Nations/Districts/Counties of Indian Territory [I. T.]
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Counties No Longer in Existence follow this list
County Formed Coordinator Comments
Adair 1907 Cherokee Nation Land; Stilwell is the county seat.
Alfalfa 1907 Shelley Lynch Created from Woods County, Oklahoma Territory; Cherokee is the county seat.
Atoka 1907 Choctaw Nation Land; Atoka is county seat.
Beaver 1907 Roughly the eastern third of what had been Beaver Co., O.T., earlier; Beaver is the county seat.
Beckham 1907 Created from Roger Mills and Greer Counties, Oklahoma Territory; Sayre is the county seat.
Blaine 1892 LaRae Halsey-Brooks Original County, Oklahoma Territory; Watonga is the county seat.
Bryan 1907 Linda K. Lewis Choctaw Nation Land; Durant is the county seat.
Caddo 1901 Mel Owings Original Lands, Oklahoma Territory; Anadarko is the county seat.
Canadian 1889 Mel Owings One of the original seven counties outlined and designated by numbers. Canadian was the Fourth; El Reno is the county seat.
Carter 1907 Linda Simpson Chickasaw Nation Land; Ardmore is the county seat.
Cherokee 1907 Cherokee Nation Land; Tahlequah is the county seat.
Choctaw 1907 April Makerney Choctaw Nation Land; Hugo is the county seat.
Cimarron 1907 LaRae Halsey-Brooks Roughly the western third of what had been Beaver County, Oklahoma Territory, earlier designated as No Man's Land;
Cleveland 1889 One of the original seven counties outlined and designated by numbers. Cleveland was the Second. Oklahoma Territory, Unassigned Lands; Norman is the county seat.
Coal 1907 Monica O'Neal Choctaw Nation Land; Coalgate is the county seat.
Comanche 1901  
Linda Simpson		 Kiowa, Comanche, Apache Lands, Oklahoma Territory; Lawton is the county seat.
Cotton 1912 Created from Comanche County, Oklahoma Territory; Walters is the county seat.
Craig 1907 Darrel Trissell Cherokee Nation Land; Vinita is the county seat.
Creek 1907 Marti Graham Creek Nation Land; Sapulpa is the county seat.
Custer 1892-96 Cheyenne, Arapaho Lands; Arapaho is the county seat. Opened April 19, 1892. Named Custer County November 6, 1896.
Delaware 1907 Cherokee Nation Land; Jay is the county seat.
Dewey 1892 Original County, Oklahoma Territory; Taloga is the county seat.
Ellis 1907 Created from Day and Woodward Counties, Oklahoma Territory; Arnett is the county seat.
Garfield 1893 Cherokee Outlet; Enid is the county seat.
Garvin 1907 Rebecca Maloney Chickasaw Nation Land; Pauls Valley is the county seat.
Grady 1907 Mel Owings Created from Pontotoc & Pickens Counties, Indian Territory and a 5 mile strip along the west border from Caddo and  Comanche Counties, Oklahoma Territory; Chickasha is the county seat.
Grant 1893 Original County, Oklahoma Territory; Medford is the county seat.
Greer 1890 Originally in the State of Texas; Mangum is the county seat.
Harmon 1909 Created from Greer and Jackson Counties, Oklahoma Territory; Hollis is the county seat.
Harper 1907 Indian Lands, Woods and Woodward Counties; Buffalo is the county seat.
Haskell 1908 Choctaw Nation Land; Stigler is the county seat.
Hughes 1907 Linda Simpson Creek Nation Land; Holdenville is the county seat.
Jackson 1907  Pam Miller Created from Greer County, Oklahoma Territory; Altus is the county seat.
Jefferson 1907 Created from Comanche County, Oklahoma Territory; Waurika is the county seat.
Johnston 1907 Chickasaw Nation Land; Tishomingo is the county seat.
Kay 1895 Original County, Oklahoma Territory; Newkirk is the county seat.
Kingfisher 1890 LaRae Halsey-Brooks One of the original seven counties outlined and designated by numbers. Kingfisher was the Fifth; Kingfisher is the county seat.
Kiowa 1901 Christine Sharbrough Original County, Oklahoma Territory; Hobart is the county seat.
Latimer 1902 Choctaw Nation Land; Wilburton is the county seat.
LeFlore 1907 Marti Graham Choctaw Nation Land; Poteau is the county seat.
Lincoln 1891 Rebecca Maloney Original County, Oklahoma Territory; Chandler is the county seat.
Logan 1890 Billie Walsh One of the original seven counties outlined and designated by numbers, Logan was the First;  Oklahoma Territory; Guthrie is the county seat.
Love 1907 Mel Owings Chickasaw Nation Land; Marietta is the county seat.
Major 1907 Created from Woods County; Fairview is the county seat.
Marshall 1907 Linda Simpson Chickasaw Nation Land; Madill is the county seat.
Mayes 1907 Anthony Marshall Cherokee Nation Land; Pryor is the county seat.
McClain 1907  Mel Owings Chickasaw Nation Land; Purcell is the county seat.
McCurtain 1907 Choctaw Nation Land; Idabel is the county seat.
McIntosh 1907 Shelley Lynch Creek Nation Land; Eufaula is the county seat.
Murray 1907 Rebecca Maloney Chickasaw Nation Land; Sulphur is the county seat.
Muskogee 1898 Sue Tolbert Creek Nation Land; Muskogee is the county seat.
Noble 1893 Cherokee Outlet; Perry is the county seat.
Nowata 1907 Cherokee Nation Land; Nowata is the county seat.
Okfuskee 1907 Linda Simpson Creek Nation Land; Okemah is the county seat.
Oklahoma 1890 Marti Graham One of the original seven counties outlined and designated by numbers. Oklahoma was the Third; Oklahoma City is the county seat.
Okmulgee 1907 Linda Simpson Creek Nation Land; Okmulgee is the county seat.
Osage 1907 Osage Nation Land; Pawhuska is the county seat.
Ottawa 1907 Betty Patterson Cherokee Nation Land; Miami is the county seat.
Pawnee 1893 Robert Gale Fender Cherokee Outlet; Pawnee is the county seat.
Payne 1890 Candace Frits One of the original seven counties outlined and designated by numbers. Payne was the Sixth. Unassigned Lands, Oklahoma Territory; Stillwater is the county seat.
Pittsburg 1907 “McAlester is the county seat. Prior to statehood (November 16, 1907), Tobucksy County, Moshulatubbee District, Choctaw Nation, Indian Territory.”
Pontotoc 1907 Chickasaw Nation Land; Ada is the county seat.
Pottawatomie 1891 Linda Simpson Original County, Oklahoma Territory; Shawnee is the county seat.
Pushmataha 1907 Choctaw Nation Land; Antlers is the county seat.
Roger Mills 1892 Judy Tracy Cheyenne, Arapaho Lands; Cheyenne is the county seat.
Rogers 1907 Cherokee Nation Land; Claremore is the county seat.
Seminole 1907 Linda Simpson Seminole Indian Land; Wewoka is the county seat.
Sequoyah 1907 Cherokee Nation Land; Sallisaw is the county seat.
Stephens 1907 Tammy Sharp Comanche County, Oklahoma Territory and Chickasaw Nation Land; Duncan is the county seat.
Texas 1907 LaRae Halsey-Brooks Roughly the eastern third of what had been Beaver County, Oklahoma Territory, earlier designated as No Man's Land; Guymon is the county seat.
Tillman 1907 Comanche Indian Land; Frederick is the county seat.
Tulsa 1905 Tim Connor Creek Nation Land; Tulsa is the county seat.
Wagoner 1908 Creek Nation Land; Wagoner is the county seat.
Washington 1897 Cherokee Nation Land; Bartlesville is the county seat.
Washita 1900 Cheyenne, Arapaho Lands; Cordell is the county seat.
Woods 1893 Cherokee Outlet; Alva is the county seat.
Woodward 1893 Cherokee Outlet; Woodward is the county seat.
Counties No Longer in existance
A "A County" was the original designation for Lincoln County, Oklahoma Territory. It included some of the former Absentee Shawnee, Iowa, Kickapoo, and Sac & Fox Lands administered by the Sac & Fox Agency.
B "B County" was the original designation for Pottawatomie County, Oklahoma Territory.  It included some of the former Absentee Shawnee, Kickapoo, and Pottawatomie Lands administered by the Sac & Fox Agency.
Beaver One of the original seven counties of Oklahoma Territory, outlined and designated by numbers.  Beaver was the Seventh, and covered what had earlier been designated as No Man's Land.  At statehood, it was broken up into Cimarron, Texas, and Beaver Counties. 
C "C County" was the original designation for Blaine County, Oklahoma Territory
D "D County" was the original designation for Dewey County, Oklahoma Territory
Day Day County in Oklahoma Territory, was abolished at statehood, comprising the northern portion of Roger Mills County and the southern portion of Ellis County. Named for William R. Day
E "E County" was the original designation for Day County, Oklahoma Territory
F "F County" was the original designation for Roger Mills County, Oklahoma Territory.
G "G County" was the original designation for Custer County, Oklahoma Territory.
H "H County" was the original designation for Washita County, Oklahoma Territory.
I "I County" was the original designation for Caddo County, Oklahoma Territory 
K "K County" was the original designation for Kay County, Oklahoma Territory
L "L County" was the original designation for Grant County, Oklahoma Territory.
M "M County" was the original designation for Woods County, Oklahoma Territory.
N "N County" was the original designation for Woodward County, Oklahoma Territory.
O "O County" was the original designation for Garfield County, Oklahoma Territory.
P "P County" was the original designation for Noble County, Oklahoma Territory.
Q "Q County" was the original designation for Pawnee County, Oklahoma Territory.
ITGenWeb

Area Coordinator Comments
Cherokee Nation One of the "Five Civilized Tribes"; map of Cherokee Nation Districts
Cherokee Outlet Area was settled as a result of the land run held September 16, 1893.
Cheyenne & Arapaho Cheyenne-Arapaho members were allotted homesteads and settlement of the remainder of the land was decided by a land run held April 19, 1892.
Chickasaw Nation Linda Simpson One of the "Five Civilized Tribes"
Choctaw Nation April Makerney One of the "Five Civilized Tribes"
Creek Nation Darren McCathern One of the "Five Civilized Tribes"
Delaware (Lenape) Majority settled in the the Nowata - Washington County area
Iowa   See Sac and Fox Agency
Kansas/Kanza/Kaw Linda Simpson Located in the far north area of Kay Co.
Kickapoo    See Sac and Fox Agency
Kiowa, Comanche & Apache Darren McCathern Settlement of this area was decided by a land lottery instead of a race for claims. The opening occurred August 1, 1901. This was the last large land opening in the present state of Oklahoma.
No Man's Land LaRae Halsey-Brooks No Man's Land encompassed the Panhandle counties of Beaver, Texas, and Cimarron.
Osage Nation  
Ponca Agency Includes Pawnee, Poncas, Otoes and Missouria, Tonkawa
Pottawatomie    See Sac and Fox Agency
Quapaw Agency Lands includes Quapaw, Modoc, Ottawa, Peoria, Seneca, Shawnee, Wyandotte
Sac and Fox Agency  Linda Simpson Includes Sac and Fox, Kickapoo, Iowa, Shawnee, Pottawatomi 
Seminole Nation Linda Simpson One of the "Five Civilized Tribes"
Shawnee   See Sac and Fox Agency
Unassigned Lands LaRae Halsey-Brooks  
Wichita & Caddo   
OK/IT Projects
Project Coordinator Comments
Guion Miller Apps  
Indian Country
 
Indian Pioneer Papers    
Maps n More
Mel Owings		  
Native American Research Project LaRae Halsey-Brooks  
OK Cemeteries Mel Owings  
OK Funeral Homes Mel Owings  
OK Reunions LaRae Halsey-Brooks  
OKBits Mel Owings  
dOWN hOME rECIPES Billie Walsh  
OK Land Openings
 
OK Lawmen & Outlaws Mel Owings  
OK Military
 
OK Marriages
 
OK Newspapers    
OK Success Stories LaRae Halsey-Brooks  
OK Surnames    
OK Photo Gallery  
Soldiers of the Great War Mel Owings