Population 5,256 · Census ACS 2020–24
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Population and households in Petersburg
Household size in Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.37 | 2.69 | 2.68 |
| 2010–14 | 2.26 | 2.71 | 2.73 |
| 2015–19 | 2.22 | 2.66 | 2.71 |
| 2020–24 | 2.23 | 2.58 | 2.65 |
| Change | −0.14 | −0.11 | −0.03 |
Petersburg is a place of small households, averaging 2.23 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has dropped from 2.37, a much bigger shift than nationally. Only 31 of the 388 Illinois cities with 5,000+ people have smaller households.
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 Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 44.0 | 37.6 | 37.7 |
| 2010–14 | 46.0 | 38.5 | 38.6 |
| 2015–19 | 47.2 | 39.6 | 39.6 |
| 2020–24 | 44.8 | 40.2 | 40.1 |
| Change | +0.9 | +2.6 | +2.3 |
Petersburg skews older: half of its residents are older than 44.8, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. Since 2006–10, the median age has crept up from 44.0, in line with the national trend.
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 Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 9.7% | 11.7% | 12.3% |
| 2010–14 | 8.2% | 11.7% | 12.3% |
| 2015–19 | 10.6% | 11.1% | 11.6% |
| 2020–24 | 10.8% | 11.3% | 11.6% |
| Change | +1.0 pts | −0.4 pts | −0.6 pts |
Single parents head just over one in ten households in Petersburg (10.8%), close to the national share of 11.6%. The single-parent share is up 1.0 points from 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 Petersburg
Renters in Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 21.7% | 30.8% | 33.3% |
| 2010–14 | 24.2% | 33.1% | 35.6% |
| 2015–19 | 28.0% | 33.9% | 36.0% |
| 2020–24 | 24.9% | 32.9% | 34.8% |
| Change | +3.2 pts | +2.1 pts | +1.5 pts |
About a quarter of households in Petersburg rent their homes (24.9%), below the national share of 34.8%; the rest own. Nearly four in ten owners (38.4%) have paid off their mortgages, about the same as nationally. The renter share has risen 3.2 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 Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 11.1% | 10.0% | 11.4% |
| 2010–14 | 10.4% | 10.1% | 11.4% |
| 2015–19 | 11.0% | 9.8% | 11.1% |
| 2020–24 | 5.5% | 8.1% | 9.6% |
| Change | −5.7 pts | −1.9 pts | −1.8 pts |
Only 5.5% of homes in Petersburg are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Since 2006–10, vacancy has fallen 5.7 points, a much bigger shift than nationally.
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 Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1969 | 1966 | 1974 |
| 2010–14 | 1974 | 1967 | 1975 |
| 2015–19 | 1967 | 1968 | 1977 |
| 2020–24 | 1974 | 1970 | 1980 |
| Change | +5 | +4 | +6 |
Housing in Petersburg leans a little older: the median home dates to 1974, against 1980 nationally. Still, homes here are newer than in Illinois overall, where the median home dates to 1970. The median year built has moved up from 1969 in 2006–10, a sign of steady new building. The newest homes are mostly in the northeast, the oldest in the northwest.
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 Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $844 | $953 | $965 |
| 2010–14 | $658 | $1,028 | $1,040 |
| 2015–19 | $925 | $1,165 | $1,213 |
| 2020–24 | $876 | $1,428 | $1,571 |
| Change | +$32 | +$475 | +$606 |
Rent in Petersburg runs $876 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $32 a month from 2006–10, a 4% rise, a slower climb than the nation's. Rent takes 31.2% of the typical renter's income, just over the 30% mark often used to define affordable rent.
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 Petersburg
Bachelor's degrees in Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 26.4% | 31.2% | 28.4% |
| 2010–14 | 23.5% | 32.4% | 29.6% |
| 2015–19 | 27.0% | 34.7% | 32.1% |
| 2020–24 | 33.5% | 37.7% | 35.6% |
| Change | +7.1 pts | +6.5 pts | +7.2 pts |
About a third of adults 25 and older in Petersburg (33.5%) hold at least a bachelor's degree, close to the national share of 35.6%. The share is lower than in Illinois overall (37.7%). Since 2006–10, the share with a degree has risen 7.1 points, mirroring the country.
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 Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 89.7% | 86.3% | 84.9% |
| 2010–14 | 90.9% | 87.5% | 86.1% |
| 2015–19 | 91.7% | 89.1% | 87.7% |
| 2020–24 | 95.5% | 90.3% | 89.3% |
| Change | +5.9 pts | +4.0 pts | +4.3 pts |
High school completion is high in Petersburg: 95.5% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 5.9 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 Petersburg
| Period | Petersburg | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 3.3% | 8.7% | 8.1% |
| 2010–14 | 5.7% | 10.2% | 9.4% |
| 2015–19 | 5.3% | 6.1% | 5.6% |
| 2020–24 | 2.7% | 6.0% | 5.4% |
| Change | −0.6 pts | −2.7 pts | −2.7 pts |
The job market in Petersburg has been strong: just 2.7% of the labor force was out of work and looking, well below the national rate of 5.4%. Unemployment has edged down 0.6 points since 2006–10, a smaller shift than 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).
Petersburg compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Petersburg | 2.23 | 44.8 | 10.8% | 24.9% | 5.5% | 1974 | $876 | 33.5% | 95.5% | 2.7% |
| Tice | 2.71 | 43.2 | 8.5% | 12.2% | 1.4% | 1993 | $948 | 31.8% | 93.5% | 4.5% |
| Athens | 2.47 | 40.0 | 10.4% | 18.0% | 5.3% | 1985 | $882 | 28.8% | 93.6% | 4.6% |
| Tallula | 2.22 | 49.4 | 8.9% | 10.8% | 14.1% | 1953 | $1,045 | 23.2% | 96.8% | 10.7% |
| Salisbury | 2.22 | 55.0 | 8.2% | 2.9% | 8.8% | 1986 | $1,052 | 42.0% | 98.5% | 5.0% |
| Greenview | 2.35 | 44.9 | 10.6% | 15.0% | 7.3% | 1965 | $748 | 20.4% | 94.8% | 1.5% |
| Sweet Water | 2.53 | 47.6 | 10.8% | 7.1% | 4.9% | 1965 | $567 | 23.9% | 95.8% | 2.0% |
| Oakford | 2.30 | 38.2 | 9.2% | 31.9% | 8.2% | 1951 | $1,069 | 6.1% | 92.9% | 1.5% |
| Richland | 2.57 | 37.6 | 8.5% | 13.6% | 14.8% | 1968 | $1,079 | 23.6% | 98.7% | 3.6% |
| Newmansville | 2.33 | 43.5 | 7.2% | 17.5% | 18.9% | 1958 | $1,056 | 18.3% | 92.4% | 7.2% |
| Cantrall | 2.72 | 45.4 | 10.6% | 12.4% | 3.1% | 1981 | $1,058 | 34.4% | 96.1% | 0.4% |
All figures 2020–24.
Cities with similar populations: Hutchinson Island South, FL · Elmendorf Afb, AK · Euharlee, GA · Eutawville, SC · Evart, MI · Evendale, OH · Fabens, TX · Fairway, KS · Fall Branch, TN · Hebron, MD
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 Petersburg. 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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