County outline
Where Beaver County is located
Area breakdown
Land accounts for 99.8% of Beaver County’s measured area and water for 0.2%. Its combined area converts to 4,707.8 square kilometers or approximately 1,163,311 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 1,814.837 | 4,700.406 | 1,161,495.7 |
| Water | 2.837 | 7.348 | 1,815.7 |
| Total | 1,817.674 | 4,707.754 | 1,163,311.4 |
How Beaver County compares
By original Census land area, Beaver County ranks #5 of 77 in Oklahoma and #324 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 2.261 times the Oklahoma county-equivalent median of 802.7 square miles. It accounts for 2.6% of the combined county land area in the state.
See the complete Oklahoma ranking · What counts as a county equivalent?
Population and density of Beaver County
The Census Bureau estimates that 4,882 people lived in Beaver County on July 1, 2025. That ranks #2,897 of 3,222 county equivalents nationally and #70 of 77 in Oklahoma. Since the April 1, 2020 estimates base of 5,050, the population has declined by 168 (−3.3%), compared with +4.1% for Oklahoma as a whole.
With 1,814.8 square miles of land, that is 2.7 people per square mile (1 per km²), placing Beaver County #3,012 nationally for density and #76 in Oklahoma. The median county equivalent has 47 people per square mile; the Oklahoma median is 28. Put another way, there are about 238 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 5,028 | 4,992 | 5,031 | 5,005 | 4,915 | 4,882 |
| Change | — | −36 | +39 | −26 | −90 | −33 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in Beaver County
4 incorporated places lie at least partly in Beaver County. Together they are home to 1,711 people (35%); the other 3,171 (65%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Beaver town, with 1,213 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Beaver townCounty seat | 1,213 | −4.4% | 1.148 |
| Forgan town | 435 | −3.1% | 0.393 |
| Gate town | 58 | −3.3% | 0.252 |
| Knowles town | 5 | 0% | 0.199 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Beaver County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Beaver County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
7 ZIP Code Tabulation Areas have land in Beaver County; 6 of them have most of their land inside the county, and the others mainly cover neighboring areas.
73843738447384873931739327393873950
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Beaver County
Beaver County shares a land border with 8 county equivalents, including 5 in Kansas and Texas. It has more land than 7 of them. The largest neighbor is Texas County (2,041.3 mi²) and the smallest is Seward County (639.7 mi²). Together with its neighbors, Beaver County forms a block of 10,568.5 mi² of land, of which it holds 17.2%.
| Bordering county equivalent | Land mi² | Size vs. Beaver | Compare |
|---|---|---|---|
| Texas County | 2,041.3 | 1.1× larger | Compare |
| Ellis County | 1,231.5 | 1.5× smaller | Compare |
| Harper County | 1,038.6 | 1.7× smaller | Compare |
| Meade CountyKansas | 978.1 | 1.9× smaller | Compare |
| Clark CountyKansas | 974.6 | 1.9× smaller | Compare |
| Lipscomb CountyTexas | 932.2 | 1.9× smaller | Compare |
| Ochiltree CountyTexas | 917.7 | 2× smaller | Compare |
| Seward CountyKansas | 639.7 | 2.8× smaller | Compare |
How big is Beaver County compared with U.S. states?
Beaver County has more land than 1 of the 50 states. It is about 1.8 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.1 times as much land (1,948.6 mi²). Oklahoma’s county land could hold about 38 areas the size of Beaver County.
Another way to picture it: the same land area would fill a square about 42.6 miles (68.6 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about Beaver County?
Beaver County has more land than 2,898 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Beaver County at #364 nationally by total area, 40 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 0.2%, compared with a national county-equivalent median of 1.2% — 1 percentage points lower. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Beaver County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #323 | Douglas County, Washington | 1,819.2 | Compare |
| #324 | Beaver County, Oklahoma | 1,814.8 | This county |
| #325 | Haakon County, South Dakota | 1,810.5 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 36.748334, -100.483056. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 4,700,407,086 m²; AWATER: 7,347,161 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Beaver County?
Beaver County, Oklahoma has 1,814.8 square miles (4,700.4 km²) of land and 2.837 square miles of water, for a total area of 1,817.7 square miles. It ranks #324 of 3,222 U.S. county equivalents by land area.
Is Beaver County the largest county in Oklahoma?
No. Beaver County ranks #5 of 77 in Oklahoma by land area. The largest is Osage County, with 2,246.7 square miles of land.
What counties border Beaver County?
Beaver County shares a land border with Texas County, Meade County, Kansas, Lipscomb County, Texas, Harper County, Ochiltree County, Texas, Seward County, Kansas, Ellis County, and Clark County, Kansas.
What is the population of Beaver County?
The Census Bureau estimates Beaver County had 4,882 residents on July 1, 2025, ranking #2,897 of 3,222 county equivalents. That is 2.7 people per square mile of land.
What is the county seat of Beaver County?
The county seat of Beaver County is Beaver.
What cities and towns are in Beaver County?
Beaver County has 4 incorporated places. The most populous are Beaver town, Forgan town, Gate town, and Knowles town; 3,171 residents live outside any incorporated place.
Is Beaver County part of a metropolitan area?
No. Beaver County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Beaver County?
7 ZIP Code Tabulation Areas have land in Beaver County, and 6 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Beaver County compare with U.S. states?
It has more land than 1 of the 50 states, including Rhode Island (1,033.9 square miles of land).
How many acres of land are in Beaver County?
The land measurement converts to approximately 1,161,496 acres. Including water, total area is approximately 1,163,311 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.