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.
Seminole County, OK Climate
Seminole County, OK has an average annual temperature of 16°C (61°F) and receives about 995 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
16°C
Avg Temp
995
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 3° / 38° | 40 mm |
| February | 6° / 43° | 51 mm |
| March | 11° / 52° | 84 mm |
| April | 16° / 61° | 97 mm |
| May | 20° / 69° | 136 mm |
| June | 25° / 76° | 109 mm |
| July | 28° / 82° | 64 mm |
| August | 27° / 81° | 66 mm |
| September | 23° / 73° | 115 mm |
| October | 17° / 62° | 104 mm |
| November | 10° / 50° | 77 mm |
| December | 5° / 42° | 52 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Seminole County, OK
The most comfortable months to visit Seminole County, OK are typically May, September and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 34°C high). The coldest is January (near -3°C low). May is usually the wettest month.
Where to stay near Seminole County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.