Okmulgee County area

Okmulgee County, Oklahoma covers 702.4 square miles: 697.4 square miles of land and 5.004 square miles of water. Its county seat is Okmulgee. An estimated 37,241 people lived there in 2025.

Official Census measurements · GEOID 401112026 Gazetteer · retrieved September 27, 2026
Land area697.4 mi²
Water area5.004 mi²
Population (2025)37,241
People per mi²53

County outline

Generalized outline of Okmulgee County, Oklahoma
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Okmulgee County is located

Okmulgee County highlighted on a map of all U.S. county equivalents. About the maps

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

MeasurementSquare milesSquare kilometersAcres
Land697.4431,806.369446,363.5
Water5.00412.963,202.6
Total702.4471,819.329449,566.1

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.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate36,68836,84836,93936,99437,16337,241
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 placePopulation 2025Since 2020Land mi²
Okmulgee cityCounty seat · Also in 1 other county11,386+0.9%17.2
Henryetta city5,620−0.2%6.848
Morris city1,340+2.9%1.175
Beggs city1,188+1%4.196
Dewar town771+1.3%1.012
Winchester town540+2.1%5.454
Schulter town430+2.4%0.849
Grayson town134+3.1%1.128
Hoffman town84+2.4%0.252
Liberty townAlso in 1 other county710%6.142
Mounds townAlso in 1 other county50%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 equivalentPopulation 2025Land mi²
Tulsa County698,782570.2
Rogers County102,197675.7
Wagoner County93,263561.9
Creek County74,967949.9
Osage County46,7942,246.7
Okmulgee County37,241697.4
Pawnee County16,029568.3

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%.

Map of Okmulgee County and the 6 county equivalents that border it Okfuskee County, Oklahoma: 618.5 mi² landMcIntosh County, Oklahoma: 618.3 mi² landCreek County, Oklahoma: 949.9 mi² landMuskogee County, Oklahoma: 810.7 mi² landTulsa County, Oklahoma: 570.2 mi² landWagoner County, Oklahoma: 561.9 mi² land
Okmulgee County (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. OkmulgeeCompare
Creek County949.91.4× largerCompare
Muskogee County810.71.2× largerCompare
Okfuskee County618.51.1× smallerCompare
McIntosh County618.31.1× smallerCompare
Tulsa County570.21.2× smallerCompare
Wagoner County561.91.2× smallerCompare

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.

Land area: Okmulgee County and the closest-sized states
Okmulgee County697.4 mi²
Rhode Island1,033.9 mi²

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.

Land area compared with the typical county equivalent
Okmulgee County697.4 mi²
Oklahoma median802.7 mi²
National median604.5 mi²

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 rankCounty equivalentLand mi²Comparison
#1329Moore County, North Carolina697.6Compare
#1330Okmulgee County, Oklahoma697.4This county
#1331Henry County, Missouri696.9Compare

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.

Download the official county source ZIP ↗ · Methodology

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.

Cite this county

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