Roger Mills County, Oklahoma
A county in Oklahoma, ranked 74 of 77 by population.
CountyFIPS 40129
- Population
- 3,259
- -172 (-5.0%) since 2020
- Land area
- 1,141
- square miles. A further 0.5% of the total area is water
- Population density
- 2.9
- people per square mile, computed rather than published
- County seat
- Cheyenne
- Seat of county government.
- Established
- 1892
- 133 years ago
- Largest city
- Cheyenne town
- Population 725.
Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.
Satellite view
Aerial imagery of Roger Mills County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.
Where Roger Mills County ranks
Position among the 77 counties of Oklahoma, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.
| Measure | Value | In Oklahoma | Nationally |
|---|---|---|---|
| Population | 3,259 | 74th of 77 | 2,938th of 3,144 |
| Land area | 1,141 sq mi | 13th of 77 | 545th of 3,144 |
| Population density | 2.9 per sq mi | 75th of 77 | 2,915th of 3,144 |
| Median household income | $66,094 | 16th of 77 | 1,531st of 3,143 |
Full data for Roger Mills County
| Measure | Value | Source and vintage |
|---|---|---|
| Population | 3,259 | Vintage 2025 Population Estimates |
| Population in 2020 | 3,431 | Vintage 2025 Population Estimates |
| 2020 estimates base? | 3,442 | Vintage 2025 Population Estimates |
| Land area | 1,141 sq mi | 2025 Gazetteer Files |
| Water area | 5.3 sq mi | 2025 Gazetteer Files |
| Total area | 1,146 sq mi | 2025 Gazetteer Files |
| Population density? | 2.9 per sq mi | Computed: Vintage 2025 estimates divided by 2025 Gazetteer land area |
| Median household income | $66,094 | American Community Survey 2020-2024 5-Year Estimates |
| Median home value | $157,800 | American Community Survey 2020-2024 5-Year Estimates |
| Median age | 42.0 | American Community Survey 2020-2024 5-Year Estimates |
| Households | 1,416 | American Community Survey 2020-2024 5-Year Estimates |
| Housing units | 1,847 | American Community Survey 2020-2024 5-Year Estimates |
Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.
How the population changed
The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:
- Births minus deaths
- -6
- 37 births, 43 deaths
- Net migration
- -21
- More people moved out than moved in.
Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.
The 6 areas bordering Roger Mills County
Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.
| Bordering area | State | Shared border | Population |
|---|---|---|---|
| Ellis County | Oklahoma | 56 mi | 3,613 |
| Beckham County | Oklahoma | 42 mi | 22,159 |
| Custer County | Oklahoma | 22 mi | 28,175 |
| Hemphill County | Texas | 18 mi | 3,083 |
| Dewey County | Oklahoma | 14 mi | 4,207 |
| Wheeler County | Texas | 14 mi | 4,773 |
Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.
All 77 counties of Oklahoma
Open the interactive Oklahoma county map, or jump straight to any of them.
- Adair County
- Alfalfa County
- Atoka County
- Beaver County
- Beckham County
- Blaine County
- Bryan County
- Caddo County
- Canadian County
- Carter County
- Cherokee County
- Choctaw County
- Cimarron County
- Cleveland County
- Coal County
- Comanche County
- Cotton County
- Craig County
- Creek County
- Custer County
- Delaware County
- Dewey County
- Ellis County
- Garfield County
- Garvin County
- Grady County
- Grant County
- Greer County
- Harmon County
- Harper County
- Haskell County
- Hughes County
- Jackson County
- Jefferson County
- Johnston County
- Kay County
- Kingfisher County
- Kiowa County
- Latimer County
- Le Flore County
- Lincoln County
- Logan County
- Love County
- Major County
- Marshall County
- Mayes County
- McClain County
- McCurtain County
- McIntosh County
- Murray County
- Muskogee County
- Noble County
- Nowata County
- Okfuskee County
- Oklahoma County
- Okmulgee County
- Osage County
- Ottawa County
- Pawnee County
- Payne County
- Pittsburg County
- Pontotoc County
- Pottawatomie County
- Pushmataha County
- Roger Mills County
- Rogers County
- Seminole County
- Sequoyah County
- Stephens County
- Texas County
- Tillman County
- Tulsa County
- Wagoner County
- Washington County
- Washita County
- Woods County
- Woodward County
Data on this page last rebuilt 30 August 2026. How these figures are produced.