Seminole County, Oklahoma Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 37th-largest in Oklahoma
The population of Seminole County, Oklahoma is 23,550 as of the 2023 American Community Survey, making it the 37th-largest county in Oklahoma. The median household income is $46,191, the median home value is $91,200, and the median age is 39.2.
The population of Seminole County has declined 8.4% since 2010 (25,487 → 23,351), a -0.62% annualized rate.
23,550
Population
-0.62%
Annual growth
37
People / sq mi
$46,191
Median Income
$91,200
Median Home Value
Seminole County covers 633 sq mi of land at 37.2 people per square mile.
About Seminole County, OK
In Seminole County, home values do the distinguishing — a median of $91,200. With 23,550 residents, Seminole County is a county in Oklahoma. It ranks #37 among counties in Oklahoma by population.
Earnings trail the nation, with the median household making $46,191, below the US median of $78,538. Poverty is among the highest of comparable US counties: 20.4%, above the national 12.4%. Home prices sit near the bottom of the range at $91,200, with typical rent around $730.
Degree attainment is on the lower side for US counties: 15.1% of adults hold a bachelor’s degree, below the national 35.0%. Just 5.5% of workers are home-based, below the national 14.0%, and the average commute runs about 24 minutes each way.
Seminole County Population History (2010-2024)
The county of Seminole County had a population of 25,487 in 2010 and 23,351 in 2024, a -8.4% growth over 14 years. The peak was 25,487 in 2010. Average annual growth rate: -0.62%.
23,351
Population (2024)
25,487
Population (2010)
25,487
Peak (2010)
-0.62%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 25,487 |
| 2011 | 25,443 |
| 2012 | 25,388 |
| 2013 | 25,445 |
| 2014 | 25,361 |
| 2015 | 25,410 |
| 2016 | 25,157 |
| 2017 | 24,864 |
| 2018 | 24,529 |
| 2019 | 24,321 |
| 2020 | 23,512 |
| 2021 | 23,539 |
| 2022 | 23,484 |
| 2023 | 23,585 |
| 2024 | 23,351 |
Race & Ethnicity
| White | 64.7% |
| Black or African American | 4.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 26.3% |
| Two or More Races | 0.0% |
Age & Sex
39.2
Median Age
50.8%
Female
49.2%
Male
18.2%
Age 65+
Age Distribution
Children (under 15): 19.9% · Seniors (65+): 18.2%
Income & Poverty
| Median household income | $46,191$-17,412 vs state |
| Mean household income | $60,002 |
| Per-capita income | $24,102 |
| Poverty rate | 20.4%+9.3% vs state |
| Unemployment rate | 3.6% |
| Employment-to-population | 46.4% |
Top Industries by Employment
The largest employment sector in Seminole County is professional & business services, accounting for 21.0% of workers.
How residents commute
0.1%
Drive alone
2.6%
Carpool
80.5%
Public transit
5.5%
Work from home
23.6 min
Avg commute
Housing
$91,200$-94,700 vs state
Median home value
$730
Median rent
69.6%
Homeownership rate
10,789
Total housing units
80.6%
Occupied
19.4%
Vacant
30.4%
Renter-occupied
Social & access
81.0%
With health insurance
86.2%
With broadband internet
23.4%
Foreign-born
8.7%
Veterans (18+)
24.1%
With a disability
96.3%
Speak language other than English at home
Education
85.3%
High School+
15.1%
Bachelor's+
Largest cities in Oklahoma
Other counties in Oklahoma
Part of Oklahoma
Metro areas in Oklahoma
County rankings
Frequently Asked Questions
Seminole County, Oklahoma has a population of 23,550 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 37th-largest county in Oklahoma. Population density is 37 people per square mile.
The population of Seminole County has declined 8.4% since 2010 (25,487 → 23,351), a -0.62% annualized rate.
The median household income in Seminole County, Oklahoma is $46,191, with mean (average) household income of $60,002 and per-capita income of $24,102. 20.4% of residents live below the federal poverty level.
In Seminole County, the largest racial and ethnic groups are White (64.7%), Hispanic or Latino (26.3%), Black or African American (4.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Seminole County, Oklahoma is 39.2 years. Residents are 50.8% female and 49.2% male.
The median home value in Seminole County is $91,200 and median monthly rent is $730. 69.6% of occupied housing units are owner-occupied. The county has 10,789 total housing units, 19.4% of which are vacant.
The largest employment sector in Seminole County, Oklahoma is professional, scientific, and management services, employing 21.0% of workers. The unemployment rate is 3.6%.
Oklahoma City is among the largest cities associated with Seminole County, Oklahoma, with a population of 688,693.
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Full rankings of Oklahoma counties
Statewide data for Oklahoma
Population, race, income, age, and trends across Oklahoma
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.