Population 37,177 · Census ACS 2020–24
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Population and households in Warren County
Household size in Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.58 | 2.52 | 2.49 | 2.68 |
| 2010–14 | 2.65 | 2.53 | 2.52 | 2.73 |
| 2015–19 | 2.69 | 2.49 | 2.50 | 2.71 |
| 2020–24 | 2.70 | 2.46 | 2.49 | 2.65 |
| Change | +0.12 | −0.06 | −0.00 | −0.03 |
Households in Warren County average 2.70 people, about the same as the country as a whole (2.65). The typical household here is bigger than in the wider St. Louis area, where it has 2.46 people. Household size has climbed from 2.58 in 2006–10, even as the national average fell.
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 Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 38.6 | 38.5 | 38.4 | 37.7 |
| 2010–14 | 40.3 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 41.6 | 40.7 | 40.0 | 39.6 |
| 2020–24 | 42.1 | 40.8 | 40.1 | 40.1 |
| Change | +3.5 | +2.3 | +1.7 | +2.3 |
Warren County skews a little older than the country: its median age is 42.1, against 40.1 nationally. The median age has climbed from 38.6 in 2006–10, as it has nationally. The youngest areas are in the center, the oldest in the northwest.
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 Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.0% | 11.7% | 11.3% | 12.3% |
| 2010–14 | 10.6% | 11.5% | 11.4% | 12.3% |
| 2015–19 | 11.1% | 11.0% | 10.9% | 11.6% |
| 2020–24 | 9.0% | 11.1% | 11.0% | 11.6% |
| Change | +1.0 pts | −0.6 pts | −0.3 pts | −0.6 pts |
Single-parent households are less common in Warren County than nationally: 9.0%, against 11.6%. The single-parent share has edged up 1.0 points since 2006–10, even as the national share fell.
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 Warren County
Renters in Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 21.6% | 28.3% | 30.0% | 33.3% |
| 2010–14 | 20.6% | 30.1% | 32.1% | 35.6% |
| 2015–19 | 21.1% | 31.1% | 33.2% | 36.0% |
| 2020–24 | 19.8% | 29.6% | 31.9% | 34.8% |
| Change | −1.8 pts | +1.4 pts | +1.9 pts | +1.5 pts |
Warren County is largely a place of homeowners: only 19.8% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 32.7% have no mortgage at all, below the national share of 39.8%. Since 2006–10, the renter share has fallen 1.8 points, even as the national share rose.
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 Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.3% | 9.6% | 11.6% | 11.4% |
| 2010–14 | 13.4% | 10.1% | 12.0% | 11.4% |
| 2015–19 | 15.3% | 10.1% | 12.2% | 11.1% |
| 2020–24 | 12.9% | 8.8% | 10.5% | 9.6% |
| Change | +1.6 pts | −0.8 pts | −1.1 pts | −1.8 pts |
Vacancy runs high in Warren County: 12.9% of homes are empty, against 9.6% nationally. The count includes vacation homes and homes between owners or tenants, not just abandoned ones. Vacancy is up 1.6 points from 2006–10, even as the national rate fell.
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 Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 1988 | 1972 | 1974 | 1974 |
| 2010–14 | 1990 | 1972 | 1975 | 1975 |
| 2015–19 | 1995 | 1973 | 1976 | 1977 |
| 2020–24 | 1998 | 1975 | 1978 | 1980 |
| Change | +9 | +3 | +4 | +6 |
Much of the housing in Warren County is relatively new: half of its homes were built after 1998, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1988 in 2006–10, a sign of steady new building. Newer construction is concentrated in the north, while the southeast has the oldest housing. Only one other Missouri county has newer homes.
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 Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | $749 | $825 | $740 | $965 |
| 2010–14 | $755 | $920 | $816 | $1,040 |
| 2015–19 | $875 | $1,010 | $899 | $1,213 |
| 2020–24 | $1,088 | $1,239 | $1,122 | $1,571 |
| Change | +$339 | +$414 | +$383 | +$606 |
Rent in Warren County runs $1,088 a month at the median, utilities included, well below the U.S. median of $1,571. Rent has climbed $339 a month since 2006–10, up 45%, a slower climb than the nation's. The typical renter here spends 26.2% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Renters on a budget will find the lowest rents in the west; the highest are in the east.
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 Warren County
Bachelor's degrees in Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 16.9% | 30.3% | 26.0% | 28.4% |
| 2010–14 | 17.0% | 32.1% | 27.3% | 29.6% |
| 2015–19 | 19.6% | 34.9% | 29.6% | 32.1% |
| 2020–24 | 20.7% | 38.5% | 32.6% | 35.6% |
| Change | +3.8 pts | +8.3 pts | +6.6 pts | +7.2 pts |
Fewer adults in Warren County have a four-year degree than in the country as a whole: 20.7%, against 35.6% nationally. The share with a degree has risen 3.8 points since 2006–10, as it has nationally. College graduates are most concentrated in the southeast and least in the north.
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 Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 83.0% | 88.8% | 86.8% | 84.9% |
| 2010–14 | 84.9% | 90.5% | 88.3% | 86.1% |
| 2015–19 | 88.7% | 92.1% | 90.0% | 87.7% |
| 2020–24 | 90.8% | 93.6% | 91.8% | 89.3% |
| Change | +7.8 pts | +4.8 pts | +5.1 pts | +4.3 pts |
About as many adults in Warren County have finished high school as nationally: 90.8%, against 89.3%. The rate is lower than in the St. Louis area overall (93.6%). The share with a diploma is up 7.8 points from 2006–10, mirroring the country.
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 Warren County
| Period | Warren County | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.5% | 7.7% | 7.4% | 8.1% |
| 2010–14 | 10.7% | 8.8% | 8.4% | 9.4% |
| 2015–19 | 4.0% | 4.9% | 4.6% | 5.6% |
| 2020–24 | 4.1% | 4.3% | 4.1% | 5.4% |
| Change | −4.5 pts | −3.4 pts | −3.3 pts | −2.7 pts |
Unemployment in Warren County runs below the national rate: 4.1% of the labor force was out of work and looking, against 5.4% nationally. Unemployment has fallen 4.5 points since 2006–10, in line with the national trend. 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).
Warren 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Warren County | 2.70 | 42.1 | 9.0% | 19.8% | 12.9% | 1998 | $1,088 | 20.7% | 90.8% | 4.1% |
| St. Charles County | 2.59 | 40.8 | 8.5% | 19.5% | 4.5% | 1993 | $1,476 | 42.7% | 95.7% | 3.0% |
| St. Louis County | 2.44 | 41.3 | 11.4% | 30.8% | 8.0% | 1969 | $1,388 | 47.6% | 94.5% | 4.4% |
| St. Louis City | 2.02 | 38.2 | 13.3% | 54.7% | 16.3% | 1946 | $1,044 | 41.0% | 90.7% | 5.9% |
| Callaway County | 2.53 | 41.8 | 12.5% | 24.5% | 11.4% | 1984 | $914 | 24.6% | 90.9% | 4.6% |
| Madison County | 2.41 | 40.9 | 11.1% | 25.8% | 8.0% | 1974 | $1,069 | 32.6% | 94.1% | 4.5% |
| Moniteau County | 2.48 | 39.3 | 9.7% | 20.8% | 8.4% | 1978 | $714 | 16.3% | 84.0% | 2.3% |
| Bond County | 2.32 | 41.4 | 8.4% | 23.4% | 10.8% | 1970 | $761 | 22.9% | 90.6% | 3.8% |
| Pettis County | 2.59 | 38.9 | 12.0% | 30.9% | 9.8% | 1973 | $941 | 18.5% | 87.4% | 3.6% |
| Clay County | 2.41 | 41.7 | 13.2% | 20.7% | 14.2% | 1975 | $719 | 13.2% | 90.5% | 4.6% |
| Johnson County | 2.43 | 35.1 | 9.8% | 36.5% | 8.1% | 1988 | $888 | 30.4% | 93.9% | 4.4% |
All figures 2020–24.
Counties with similar populations: Upshur County, TX · Fayette County, WV · Finney County, KS · Floyd County, KY · Fluvanna County, VA · Franklin County, KS · Gallia County, OH · Garrett County, MD · Glenn County, CA · Grady County, GA
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 Warren 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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