County outline
Where Okmulgee County is located
Area breakdown
Land accounts for 99.3% of Okmulgee County’s measured area and water for 0.7%. Its combined area converts to 1,819.3 square kilometers or approximately 449,566 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 697.443 | 1,806.369 | 446,363.5 |
| Water | 5.004 | 12.96 | 3,202.6 |
| Total | 702.447 | 1,819.329 | 449,566.1 |
How Okmulgee County compares
By original Census land area, Okmulgee County ranks #52 of 77 in Oklahoma and #1330 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.869 times the Oklahoma county-equivalent median of 802.7 square miles. It accounts for 1% of the combined county land area in the state.
See the complete Oklahoma ranking · What counts as a county equivalent?
Population and density of Okmulgee County
The Census Bureau estimates that 37,241 people lived in Okmulgee County on July 1, 2025. That ranks #1,287 of 3,222 county equivalents nationally and #29 of 77 in Oklahoma. Since the April 1, 2020 estimates base of 36,702, the population has grown by 539 (+1.5%), compared with +4.1% for Oklahoma as a whole.
With 697.4 square miles of land, that is 53 people per square mile (21 per km²), placing Okmulgee County #1,490 nationally for density and #25 in Oklahoma. The median county equivalent has 47 people per square mile; the Oklahoma median is 28. Put another way, there are about 12 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 36,688 | 36,848 | 36,939 | 36,994 | 37,163 | 37,241 |
| Change | — | +160 | +91 | +55 | +169 | +78 |
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 Okmulgee County
11 incorporated places lie at least partly in Okmulgee County. Together they are home to 21,569 people (57.9%); the other 15,672 (42.1%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Okmulgee city, with 11,386 residents in the county (the city extends into 1 other county). Among places with at least 1,000 residents in 2020, Morris city grew fastest since then (+2.9%).
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Okmulgee cityCounty seat · Also in 1 other county | 11,386 | +0.9% | 17.2 |
| Henryetta city | 5,620 | −0.2% | 6.848 |
| Morris city | 1,340 | +2.9% | 1.175 |
| Beggs city | 1,188 | +1% | 4.196 |
| Dewar town | 771 | +1.3% | 1.012 |
| Winchester town | 540 | +2.1% | 5.454 |
| Schulter town | 430 | +2.4% | 0.849 |
| Grayson town | 134 | +3.1% | 1.128 |
| Hoffman town | 84 | +2.4% | 0.252 |
| Liberty townAlso in 1 other county | 71 | 0% | 6.142 |
| Mounds townAlso in 1 other county | 5 | 0% | 2.246 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Okmulgee County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Okmulgee County is an outlying county of the Tulsa, OK Metropolitan Statistical Area. Its 7 county equivalents have 1,069,273 residents on 6,270.1 square miles of land; Okmulgee County accounts for 11.1% of the land and 3.5% of the residents. By combined land it ranks #32 of 393 metropolitan areas, and #54 by population. It belongs to the Tulsa-Bartlesville-Muskogee, OK Combined Statistical Area.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Tulsa County | 698,782 | 570.2 |
| Rogers County | 102,197 | 675.7 |
| Wagoner County | 93,263 | 561.9 |
| Creek County | 74,967 | 949.9 |
| Osage County | 46,794 | 2,246.7 |
| Okmulgee County | 37,241 | 697.4 |
| Pawnee County | 16,029 | 568.3 |
ZIP codes
11 ZIP Code Tabulation Areas have land in Okmulgee County; 8 of them have most of their land inside the county, and the others mainly cover neighboring areas.
7404774421744227443174436744377444574447744567446074880
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 Okmulgee County
Okmulgee County shares a land border with 6 county equivalents. It has more land than 4 of them. The largest neighbor is Creek County (949.9 mi²) and the smallest is Wagoner County (561.9 mi²). Together with its neighbors, Okmulgee County forms a block of 4,826.8 mi² of land, of which it holds 14.4%.
| Bordering county equivalent | Land mi² | Size vs. Okmulgee | Compare |
|---|---|---|---|
| Creek County | 949.9 | 1.4× larger | Compare |
| Muskogee County | 810.7 | 1.2× larger | Compare |
| Okfuskee County | 618.5 | 1.1× smaller | Compare |
| McIntosh County | 618.3 | 1.1× smaller | Compare |
| Tulsa County | 570.2 | 1.2× smaller | Compare |
| Wagoner County | 561.9 | 1.2× smaller | Compare |
How big is Okmulgee County compared with U.S. states?
Okmulgee County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.5 times as much. Oklahoma’s county land could hold about 98 areas the size of Okmulgee County.
Another way to picture it: the same land area would fill a square about 26.4 miles (42.5 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 Okmulgee County?
Okmulgee County has more land than 1,892 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 Okmulgee County at #1,430 nationally by total area, 100 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 0.7%, compared with a national county-equivalent median of 1.2% — 0.5 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 Okmulgee County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1329 | Moore County, North Carolina | 697.6 | Compare |
| #1330 | Okmulgee County, Oklahoma | 697.4 | This county |
| #1331 | Henry County, Missouri | 696.9 | 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 35.643500, -95.965947. 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: 1,806,369,920 m²; AWATER: 12,960,865 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 Okmulgee County?
Okmulgee County, Oklahoma has 697.4 square miles (1,806.4 km²) of land and 5.004 square miles of water, for a total area of 702.4 square miles. It ranks #1330 of 3,222 U.S. county equivalents by land area.
Is Okmulgee County the largest county in Oklahoma?
No. Okmulgee County ranks #52 of 77 in Oklahoma by land area. The largest is Osage County, with 2,246.7 square miles of land.
What counties border Okmulgee County?
Okmulgee County shares a land border with Okfuskee County, McIntosh County, Creek County, Muskogee County, Tulsa County, and Wagoner County.
What is the population of Okmulgee County?
The Census Bureau estimates Okmulgee County had 37,241 residents on July 1, 2025, ranking #1,287 of 3,222 county equivalents. That is 53 people per square mile of land.
What is the county seat of Okmulgee County?
The county seat of Okmulgee County is Okmulgee.
What cities and towns are in Okmulgee County?
Okmulgee County has 11 incorporated places. The most populous five are Okmulgee city, Henryetta city, Morris city, Beggs city, and Dewar town; 15,672 residents live outside any incorporated place.
Is Okmulgee County part of a metropolitan area?
Yes. It is an outlying county of the Tulsa, OK Metropolitan Statistical Area, which has 7 county equivalents and 1,069,273 residents.
How many ZIP codes are in Okmulgee County?
11 ZIP Code Tabulation Areas have land in Okmulgee County, and 8 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Okmulgee County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.5 times as much land.
How many acres of land are in Okmulgee County?
The land measurement converts to approximately 446,364 acres. Including water, total area is approximately 449,566 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.