Oklahoma county geography overview
Oklahoma has 77 counties, which places it 17th among the 50 state and District of Columbia maps in this atlas when ordered by number of county-level units. Their combined 68,596.9 square miles of land place the state 19th by mapped land area.
The average county-level area is 891 square miles, while the median is 802.7 square miles. The median is often the better description of a typical unit because one or two very large areas can pull the average upward. The five largest units together account for about 14% of the state’s mapped land area.
Largest and smallest Oklahoma counties
Osage County is the largest county-level unit by land area at 2,246.7 square miles. It represents about 3% of all mapped land in Oklahoma. At the other end of the range, Marshall County has 371.5 square miles of land.
Largest by land area
- Osage County2,246.7 sq mi
- Texas County2,041.3 sq mi
- McCurtain County1,850.8 sq mi
- Cimarron County1,834.8 sq mi
- Beaver County1,814.8 sq mi
Smallest by land area
- Marshall County371.5 sq mi
- Washington County415.5 sq mi
- Murray County416.4 sq mi
- Ottawa County470.8 sq mi
- Love County513.9 sq mi
Rankings use land area rather than total area. This avoids making coastal or lake counties appear larger solely because their boundaries include extensive water.
Alphabetical list of Oklahoma counties
The table is alphabetical, so it works as a name and FIPS-code reference rather than an area ranking. Every identifier begins with the Oklahoma state FIPS prefix 40. Land and water figures are rounded to one decimal place.
77 county-level areas
Download county data / numbered map key (CSV)| No. | Name | FIPS code | Land area | Water area |
|---|---|---|---|---|
| 1 | Adair County | 40001 | 573.9 sq mi | 3.4 sq mi |
| 2 | Alfalfa County | 40003 | 866.6 sq mi | 14.9 sq mi |
| 3 | Atoka County | 40005 | 975.5 sq mi | 14.4 sq mi |
| 4 | Beaver County | 40007 | 1,814.8 sq mi | 2.8 sq mi |
| 5 | Beckham County | 40009 | 901.7 sq mi | 2.1 sq mi |
| 6 | Blaine County | 40011 | 928.5 sq mi | 10.4 sq mi |
| 7 | Bryan County | 40013 | 904.3 sq mi | 39.3 sq mi |
| 8 | Caddo County | 40015 | 1,277.8 sq mi | 12.4 sq mi |
| 9 | Canadian County | 40017 | 896.6 sq mi | 8.9 sq mi |
| 10 | Carter County | 40019 | 822.3 sq mi | 11.5 sq mi |
| 11 | Cherokee County | 40021 | 749.1 sq mi | 26.9 sq mi |
| 12 | Choctaw County | 40023 | 770.4 sq mi | 29.1 sq mi |
| 13 | Cimarron County | 40025 | 1,834.8 sq mi | 6.1 sq mi |
| 14 | Cleveland County | 40027 | 538.9 sq mi | 19 sq mi |
| 15 | Coal County | 40029 | 516.8 sq mi | 4.7 sq mi |
| 16 | Comanche County | 40031 | 1,069.3 sq mi | 14.5 sq mi |
| 17 | Cotton County | 40033 | 632.6 sq mi | 9.3 sq mi |
| 18 | Craig County | 40035 | 761.3 sq mi | 1.4 sq mi |
| 19 | Creek County | 40037 | 949.9 sq mi | 19.6 sq mi |
| 20 | Custer County | 40039 | 988.8 sq mi | 13.3 sq mi |
| 21 | Delaware County | 40041 | 737.8 sq mi | 54.2 sq mi |
| 22 | Dewey County | 40043 | 999.6 sq mi | 8.8 sq mi |
| 23 | Ellis County | 40045 | 1,231.5 sq mi | 0.4 sq mi |
| 24 | Garfield County | 40047 | 1,058.5 sq mi | 1.6 sq mi |
| 25 | Garvin County | 40049 | 802.1 sq mi | 11.6 sq mi |
| 26 | Grady County | 40051 | 1,100.5 sq mi | 4.4 sq mi |
| 27 | Grant County | 40053 | 1,000.7 sq mi | 2.7 sq mi |
| 28 | Greer County | 40055 | 639.3 sq mi | 4.3 sq mi |
| 29 | Harmon County | 40057 | 537.3 sq mi | 1.5 sq mi |
| 30 | Harper County | 40059 | 1,038.6 sq mi | 2 sq mi |
| 31 | Haskell County | 40061 | 576.7 sq mi | 48.7 sq mi |
| 32 | Hughes County | 40063 | 804.5 sq mi | 10.2 sq mi |
| 33 | Jackson County | 40065 | 802.7 sq mi | 1.6 sq mi |
| 34 | Jefferson County | 40067 | 759 sq mi | 15.2 sq mi |
| 35 | Johnston County | 40069 | 643.1 sq mi | 15.3 sq mi |
| 36 | Kay County | 40071 | 919.6 sq mi | 25.3 sq mi |
| 37 | Kingfisher County | 40073 | 898.1 sq mi | 7.9 sq mi |
| 38 | Kiowa County | 40075 | 1,015.1 sq mi | 15.6 sq mi |
| 39 | Latimer County | 40077 | 722.1 sq mi | 7 sq mi |
| 40 | Le Flore County | 40079 | 1,589.4 sq mi | 19.2 sq mi |
| 41 | Lincoln County | 40081 | 952.4 sq mi | 13.4 sq mi |
| 42 | Logan County | 40083 | 743.7 sq mi | 5.1 sq mi |
| 43 | Love County | 40085 | 513.9 sq mi | 18.3 sq mi |
| 44 | Major County | 40093 | 955 sq mi | 3 sq mi |
| 45 | Marshall County | 40095 | 371.5 sq mi | 55.5 sq mi |
| 46 | Mayes County | 40097 | 655.3 sq mi | 28.2 sq mi |
| 47 | McClain County | 40087 | 570.7 sq mi | 9.5 sq mi |
| 48 | McCurtain County | 40089 | 1,850.8 sq mi | 51.7 sq mi |
| 49 | McIntosh County | 40091 | 618.3 sq mi | 93.8 sq mi |
| 50 | Murray County | 40099 | 416.4 sq mi | 8.8 sq mi |
| 51 | Muskogee County | 40101 | 810.6 sq mi | 29.4 sq mi |
| 52 | Noble County | 40103 | 731.7 sq mi | 10.8 sq mi |
| 53 | Nowata County | 40105 | 565.8 sq mi | 15 sq mi |
| 54 | Okfuskee County | 40107 | 618.5 sq mi | 10.3 sq mi |
| 55 | Oklahoma County | 40109 | 708.9 sq mi | 9.5 sq mi |
| 56 | Okmulgee County | 40111 | 697.4 sq mi | 5 sq mi |
| 57 | Osage County | 40113 | 2,246.7 sq mi | 57.3 sq mi |
| 58 | Ottawa County | 40115 | 470.8 sq mi | 13.8 sq mi |
| 59 | Pawnee County | 40117 | 568.4 sq mi | 26.6 sq mi |
| 60 | Payne County | 40119 | 684.9 sq mi | 12.4 sq mi |
| 61 | Pittsburg County | 40121 | 1,305.5 sq mi | 72.4 sq mi |
| 62 | Pontotoc County | 40123 | 720.4 sq mi | 4.9 sq mi |
| 63 | Pottawatomie County | 40125 | 787.8 sq mi | 5.7 sq mi |
| 64 | Pushmataha County | 40127 | 1,395.6 sq mi | 27 sq mi |
| 65 | Roger Mills County | 40129 | 1,141.1 sq mi | 5.3 sq mi |
| 66 | Rogers County | 40131 | 675.7 sq mi | 35.9 sq mi |
| 67 | Seminole County | 40133 | 632.8 sq mi | 7.7 sq mi |
| 68 | Sequoyah County | 40135 | 673.6 sq mi | 40.6 sq mi |
| 69 | Stephens County | 40137 | 870.2 sq mi | 21.2 sq mi |
| 70 | Texas County | 40139 | 2,041.3 sq mi | 7.4 sq mi |
| 71 | Tillman County | 40141 | 871.1 sq mi | 8.1 sq mi |
| 72 | Tulsa County | 40143 | 570.2 sq mi | 16.6 sq mi |
| 73 | Wagoner County | 40145 | 561.9 sq mi | 28.9 sq mi |
| 74 | Washington County | 40147 | 415.5 sq mi | 8.8 sq mi |
| 75 | Washita County | 40149 | 1,003.1 sq mi | 5.6 sq mi |
| 76 | Woods County | 40151 | 1,286.5 sq mi | 3.5 sq mi |
| 77 | Woodward County | 40153 | 1,242.8 sq mi | 3.7 sq mi |
How to read and use this map
County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.
For classroom or planning use, download a PDF from the controls above. Labelled exports use numbered callouts for crowded areas; numbered quiz maps match the alphabetical county list. SVG files keep the boundary lines sharp at larger paper sizes.
Frequently asked questions
How many counties are in Oklahoma?
Oklahoma has 77 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.
Can I print this Oklahoma county map?
Yes. Choose Download / print and select PDF for a landscape Letter page, PNG for an image, or SVG for editable vector artwork. Because the map is SVG, its boundary lines stay sharp when scaled.
What is the largest county in Oklahoma?
Osage County is the largest by land area in this dataset at 2,246.7 square miles. This is an area ranking, not a population ranking.
What is the smallest county in Oklahoma?
Marshall County is the smallest by land area in this dataset at 371.5 square miles.
Are these legal survey boundaries?
No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.
Map source
U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:5,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 27, 2026.