Population 21,274 · Census ACS 2020–24
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Population and households in Jersey County
Household size in Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.58 | 2.52 | 2.69 | 2.68 |
| 2010–14 | 2.46 | 2.53 | 2.71 | 2.73 |
| 2015–19 | 2.47 | 2.49 | 2.66 | 2.71 |
| 2020–24 | 2.54 | 2.46 | 2.58 | 2.65 |
| Change | −0.04 | −0.06 | −0.11 | −0.03 |
The average household in Jersey County has 2.54 people, a bit under the U.S. average of 2.65. Locally, though, the typical household here is bigger than in the St. Louis area as a whole, where it has 2.46 people. Since 2006–10, household size has edged down from 2.58, in line with the national trend.
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 Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.3 | 38.5 | 37.6 | 37.7 |
| 2010–14 | 41.4 | 39.5 | 38.5 | 38.6 |
| 2015–19 | 43.1 | 40.7 | 39.6 | 39.6 |
| 2020–24 | 43.5 | 40.8 | 40.2 | 40.1 |
| Change | +4.2 | +2.3 | +2.6 | +2.3 |
The median resident of Jersey County is 43.5 years old, older than the national median of 40.1. The median age has climbed from 39.3 in 2006–10, mirroring the country.
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 Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.3% | 11.7% | 11.7% | 12.3% |
| 2010–14 | 10.6% | 11.5% | 11.7% | 12.3% |
| 2015–19 | 8.5% | 11.0% | 11.1% | 11.6% |
| 2020–24 | 9.8% | 11.1% | 11.3% | 11.6% |
| Change | +0.5 pts | −0.6 pts | −0.4 pts | −0.6 pts |
Single-parent households are a bit less common in Jersey County than nationally: 9.8%, against 11.6%. The single-parent share has edged up 0.5 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 Jersey County
Renters in Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 21.0% | 28.3% | 30.8% | 33.3% |
| 2010–14 | 19.8% | 30.1% | 33.1% | 35.6% |
| 2015–19 | 18.1% | 31.1% | 33.9% | 36.0% |
| 2020–24 | 19.5% | 29.6% | 32.9% | 34.8% |
| Change | −1.6 pts | +1.4 pts | +2.1 pts | +1.5 pts |
Only 19.5% of households in Jersey County rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 44.6% have no mortgage at all, above the national share of 39.8%. Rentals cluster in the north; owners are most common in the southeast. Since 2006–10, the renter share has fallen 1.6 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 Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.2% | 9.6% | 10.0% | 11.4% |
| 2010–14 | 10.9% | 10.1% | 10.1% | 11.4% |
| 2015–19 | 15.8% | 10.1% | 9.8% | 11.1% |
| 2020–24 | 19.6% | 8.8% | 8.1% | 9.6% |
| Change | +7.4 pts | −0.8 pts | −1.9 pts | −1.8 pts |
Vacant homes make up 19.6% of the housing in Jersey 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. Since 2006–10, vacancy has risen 7.4 points, 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 Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 1970 | 1972 | 1966 | 1974 |
| 2010–14 | 1977 | 1972 | 1967 | 1975 |
| 2015–19 | 1973 | 1973 | 1968 | 1977 |
| 2020–24 | 1973 | 1975 | 1970 | 1980 |
| Change | +2 | +3 | +4 | +6 |
Homes in Jersey County run older than the national norm, with a median build year of 1973 against 1980. The picture is much the same across the St. Louis area. Newer construction is concentrated in the east, while the center 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 Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | $604 | $825 | $953 | $965 |
| 2010–14 | $668 | $920 | $1,028 | $1,040 |
| 2015–19 | $714 | $1,010 | $1,165 | $1,213 |
| 2020–24 | $921 | $1,239 | $1,428 | $1,571 |
| Change | +$317 | +$414 | +$475 | +$606 |
Rent in Jersey County runs $921 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $317 a month from 2006–10, a 53% rise, a slower climb than the nation's. The typical renter here spends 24.9% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
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 Jersey County
Bachelor's degrees in Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 16.3% | 30.3% | 31.2% | 28.4% |
| 2010–14 | 16.9% | 32.1% | 32.4% | 29.6% |
| 2015–19 | 21.8% | 34.9% | 34.7% | 32.1% |
| 2020–24 | 22.6% | 38.5% | 37.7% | 35.6% |
| Change | +6.4 pts | +8.3 pts | +6.5 pts | +7.2 pts |
College degrees are relatively uncommon in Jersey County: 22.6% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. Since 2006–10, the share with a degree has risen 6.4 points, as it has nationally. College graduates are most concentrated in the south and least in the northeast.
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 Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 87.2% | 88.8% | 86.3% | 84.9% |
| 2010–14 | 90.8% | 90.5% | 87.5% | 86.1% |
| 2015–19 | 92.2% | 92.1% | 89.1% | 87.7% |
| 2020–24 | 93.8% | 93.6% | 90.3% | 89.3% |
| Change | +6.6 pts | +4.8 pts | +4.0 pts | +4.3 pts |
High school completion in Jersey County is above the national rate: 93.8% of adults have a diploma or equivalent, against 89.3%. Since 2006–10, the share with a diploma has risen 6.6 points, in line with the national trend. Jersey County has a higher share of high school graduates than at least four in five Illinois counties.
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 Jersey County
| Period | Jersey County | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.6% | 7.7% | 8.7% | 8.1% |
| 2010–14 | 9.0% | 8.8% | 10.2% | 9.4% |
| 2015–19 | 3.1% | 4.9% | 6.1% | 5.6% |
| 2020–24 | 3.0% | 4.3% | 6.0% | 5.4% |
| Change | −2.6 pts | −3.4 pts | −2.7 pts | −2.7 pts |
The job market in Jersey County has been strong: just 3.0% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 2.6 points, as it has nationally. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current 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).
Jersey 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Jersey County | 2.54 | 43.5 | 9.8% | 19.5% | 19.6% | 1973 | $921 | 22.6% | 93.8% | 3.0% |
| Calhoun County | 3.58 | 47.6 | 5.8% | 11.3% | 42.7% | 1971 | $607 | 19.9% | 94.3% | 3.8% |
| Macoupin County | 2.53 | 44.2 | 10.9% | 21.5% | 16.6% | 1964 | $851 | 20.9% | 91.6% | 3.6% |
| Lincoln County | 2.80 | 38.6 | 12.4% | 21.0% | 4.5% | 1996 | $1,032 | 18.8% | 90.5% | 3.8% |
| Montgomery County | 2.29 | 43.9 | 7.2% | 22.6% | 9.7% | 1962 | $739 | 19.0% | 90.8% | 4.9% |
| Montgomery County | 2.43 | 44.4 | 12.5% | 26.6% | 18.7% | 1978 | $842 | 17.6% | 88.5% | 3.2% |
| Fayette County | 2.63 | 41.1 | 11.0% | 19.4% | 11.3% | 1971 | $860 | 16.0% | 86.4% | 3.9% |
| Effingham County | 2.46 | 40.7 | 7.9% | 21.8% | 9.9% | 1979 | $730 | 27.6% | 93.3% | 2.0% |
| Boone County | 2.39 | 35.5 | 9.4% | 42.3% | 6.9% | 1991 | $1,131 | 52.0% | 95.0% | 4.1% |
| Jasper County | 2.44 | 45.1 | 8.8% | 14.8% | 11.6% | 1976 | $758 | 21.0% | 92.1% | 5.1% |
| Howard County | 2.62 | 39.0 | 9.2% | 21.3% | 18.1% | 1974 | $816 | 27.9% | 90.9% | 3.6% |
All figures 2020–24.
Counties with similar populations: Craig County, OK · Telfair County, GA · Taylor County, WI · Tama County, IA · Tallahatchie County, MS · Crisp County, GA · Crenshaw County, AL · Crawford County, MI · Crawford County, GA · Terry County, TX
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 Jersey 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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