Population 23,494 · Census ACS 2020–24
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Population and households in Seminole County
Household size in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 2.65 | 2.55 | 2.68 |
| 2010–14 | 2.69 | 2.60 | 2.73 |
| 2015–19 | 2.60 | 2.63 | 2.71 |
| 2020–24 | 2.60 | 2.58 | 2.65 |
| Change | −0.05 | +0.03 | −0.03 |
At 2.60 people per household, Seminole County sits close to the national average of 2.65. Household size has edged down from 2.65 in 2006–10, as it has nationally. The biggest households, usually families with children, are concentrated in the center.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 38.3 | 37.4 | 37.7 |
| 2010–14 | 39.9 | 37.5 | 38.6 |
| 2015–19 | 39.0 | 37.9 | 39.6 |
| 2020–24 | 39.2 | 38.0 | 40.1 |
| Change | +0.9 | +0.6 | +2.3 |
At 39.2, the median age in Seminole County is close to the national median of 40.1, so its age mix looks much like the country's. The median age has crept up from 38.3 in 2006–10, as it has nationally. Residents skew youngest in the northwest and oldest in the northeast.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 15.3% | 11.9% | 12.3% |
| 2010–14 | 14.2% | 12.1% | 12.3% |
| 2015–19 | 14.6% | 12.1% | 11.6% |
| 2020–24 | 14.7% | 12.0% | 11.6% |
| Change | −0.6 pts | +0.1 pts | −0.6 pts |
Single parents head about one in seven households in Seminole County (14.7%), well above the national share of 11.6%. The single-parent share has edged down 0.6 points since 2006–10, as it has nationally. Only four of Oklahoma's 77 counties have a higher share of single-parent households.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Seminole County
Renters in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 27.6% | 31.8% | 33.3% |
| 2010–14 | 26.2% | 33.5% | 35.6% |
| 2015–19 | 32.0% | 34.4% | 36.0% |
| 2020–24 | 29.0% | 34.2% | 34.8% |
| Change | +1.4 pts | +2.4 pts | +1.5 pts |
Most households in Seminole County own their homes; 29.0% rent, a little below the national share of 34.8%. Among homeowners, 63.3% have no mortgage at all, well above the national share of 39.8%. The renter share has edged up 1.4 points since 2006–10, in line with the national trend.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 20.3% | 12.8% | 11.4% |
| 2010–14 | 19.5% | 12.7% | 11.4% |
| 2015–19 | 19.9% | 13.5% | 11.1% |
| 2020–24 | 18.2% | 11.3% | 9.6% |
| Change | −2.1 pts | −1.5 pts | −1.8 pts |
Vacant homes make up 18.2% of the housing in Seminole County, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand. Vacancy has fallen 2.1 points since 2006–10, mirroring the country.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 1969 | 1976 | 1974 |
| 2010–14 | 1971 | 1977 | 1975 |
| 2015–19 | 1972 | 1979 | 1977 |
| 2020–24 | 1974 | 1982 | 1980 |
| Change | +5 | +7 | +6 |
Housing in Seminole County leans a little older: the median home dates to 1974, against 1980 nationally. The median year built has moved up from 1969 in 2006–10, a sign of steady new building. Newer construction is concentrated in the center, while the east has the oldest housing.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | $531 | $716 | $965 |
| 2010–14 | $570 | $805 | $1,040 |
| 2015–19 | $657 | $897 | $1,213 |
| 2020–24 | $798 | $1,127 | $1,571 |
| Change | +$267 | +$411 | +$606 |
Rent in Seminole County runs $798 a month at the median, utilities included, well below the U.S. median of $1,571. Rent has climbed $267 a month since 2006–10, up 50%, a slower climb than the nation's. Rent takes 28.8% of the typical renter's income, just under the 30% mark often used to define affordable rent. Rents run highest in the northwest and lowest in the northeast.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Seminole County
Bachelor's degrees in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 13.4% | 24.2% | 28.4% |
| 2010–14 | 13.4% | 24.9% | 29.6% |
| 2015–19 | 14.2% | 26.1% | 32.1% |
| 2020–24 | 16.0% | 28.9% | 35.6% |
| Change | +2.6 pts | +4.7 pts | +7.2 pts |
Fewer adults in Seminole County have a four-year degree than in the country as a whole: 16.0%, against 35.6% nationally. The share with a degree has risen 2.6 points since 2006–10, mirroring the country. Seminole County has a lower share of college graduates than the great majority of Oklahoma counties.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 80.0% | 86.0% | 84.9% |
| 2010–14 | 82.0% | 87.0% | 86.1% |
| 2015–19 | 84.2% | 88.1% | 87.7% |
| 2020–24 | 86.4% | 89.3% | 89.3% |
| Change | +6.5 pts | +3.3 pts | +4.3 pts |
Nearly one in seven adults in Seminole County never finished high school, a bit more than nationally: 86.4% have a diploma or equivalent, against 89.3% across the U.S. The share with a diploma is up 6.5 points from 2006–10, in line with the national trend.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Seminole County
| Period | Seminole County | Oklahoma | U.S. |
|---|---|---|---|
| 2006–10 | 8.5% | 6.1% | 8.1% |
| 2010–14 | 9.2% | 6.8% | 9.4% |
| 2015–19 | 7.7% | 5.2% | 5.6% |
| 2020–24 | 6.3% | 5.0% | 5.4% |
| Change | −2.2 pts | −1.1 pts | −2.7 pts |
Jobs have been a little harder to find in Seminole County than nationally: unemployment was 6.3%, against 5.4%. Unemployment has fallen 2.2 points since 2006–10, as it has nationally. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Seminole County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Seminole County | 2.60 | 39.2 | 14.7% | 29.0% | 18.2% | 1974 | $798 | 16.0% | 86.4% | 6.3% |
| Hughes County | 2.87 | 39.9 | 10.9% | 25.9% | 31.0% | 1970 | $636 | 16.3% | 84.5% | 6.8% |
| Cleveland County | 2.52 | 37.3 | 12.1% | 36.1% | 8.5% | 1990 | $1,308 | 38.0% | 92.7% | 5.0% |
| McClain County | 2.77 | 39.5 | 8.1% | 20.7% | 7.0% | 1996 | $1,118 | 28.4% | 89.3% | 4.3% |
| Grady County | 2.73 | 40.2 | 8.8% | 25.0% | 10.8% | 1985 | $977 | 23.2% | 90.9% | 5.4% |
| Haskell County | 2.54 | 41.3 | 8.6% | 21.7% | 18.4% | 1983 | $783 | 16.2% | 84.8% | 6.4% |
| Caddo County | 2.83 | 37.6 | 13.4% | 27.3% | 18.2% | 1972 | $765 | 15.6% | 87.1% | 5.7% |
| Le Flore County | 2.65 | 39.4 | 11.9% | 27.2% | 15.0% | 1984 | $812 | 15.4% | 85.5% | 5.2% |
| Logan County | 2.49 | 43.2 | 9.7% | 21.6% | 12.9% | 1981 | $717 | 16.4% | 88.5% | 5.0% |
| Yell County | 2.43 | 40.2 | 14.9% | 32.5% | 11.3% | 1984 | $740 | 14.7% | 82.8% | 3.5% |
| Conway County | 2.55 | 41.5 | 13.3% | 25.9% | 15.0% | 1984 | $969 | 20.5% | 90.3% | 6.8% |
All figures 2020–24.
Counties with similar populations: Henry County, OH · York County, NE · Hart County, GA · Hart County, KY · Yell County, AR · Yazoo County, MS · Henderson County, TN · Yates County, NY · Yankton County, SD · Harrison County, KY
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Seminole County. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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