Population 83 · Census ACS 2020–24
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Population and households in Summerville
Household size in Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.62 | 2.52 | 2.69 | 2.68 |
| 2010–14 | 2.77 | 2.53 | 2.71 | 2.73 |
| 2015–19 | 2.36 | 2.49 | 2.66 | 2.71 |
| 2020–24 | 2.31 | 2.46 | 2.58 | 2.65 |
| Change | −0.31 | −0.06 | −0.11 | −0.03 |
Households in Summerville are small: just 2.31 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Household size has dropped from 2.62 in 2006–10, but in a place this small, survey estimates can swing a lot from one release to the next.
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 Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 43.4 | 38.5 | 37.6 | 37.7 |
| 2010–14 | 34.9 | 39.5 | 38.5 | 38.6 |
| 2015–19 | 51.1 | 40.7 | 39.6 | 39.6 |
| 2020–24 | 44.8 | 40.8 | 40.2 | 40.1 |
| Change | +1.4 | +2.3 | +2.6 | +2.3 |
With a median age of 44.8, Summerville is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
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 Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.0% | 11.7% | 11.7% | 12.3% |
| 2010–14 | 8.6% | 11.5% | 11.7% | 12.3% |
| 2015–19 | 4.8% | 11.0% | 11.1% | 11.6% |
| 2020–24 | 13.8% | 11.1% | 11.3% | 11.6% |
| Change | +7.8 pts | −0.6 pts | −0.4 pts | −0.6 pts |
Single parents head about one in seven households in Summerville (13.8%), above the national share of 11.6%.
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 Summerville
Renters in Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.8% | 28.3% | 30.8% | 33.3% |
| 2010–14 | 13.8% | 30.1% | 33.1% | 35.6% |
| 2015–19 | 10.9% | 31.1% | 33.9% | 36.0% |
| 2020–24 | 4.1% | 29.6% | 32.9% | 34.8% |
| Change | −10.7 pts | +1.4 pts | +2.1 pts | +1.5 pts |
Only 4.1% of households in Summerville rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. About two-thirds of owners (66.1%) have paid off their mortgages, well above the national share of 39.8%.
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 Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.4% | 9.6% | 10.0% | 11.4% |
| 2010–14 | 9.7% | 10.1% | 10.1% | 11.4% |
| 2015–19 | 19.5% | 10.1% | 9.8% | 11.1% |
| 2020–24 | 19.6% | 8.8% | 8.1% | 9.6% |
| Change | +16.2 pts | −0.8 pts | −1.9 pts | −1.8 pts |
Vacant homes make up 19.6% of the housing in Summerville, 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.
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 Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 1953 | 1972 | 1966 | 1974 |
| 2010–14 | 1959 | 1972 | 1967 | 1975 |
| 2015–19 | 1953 | 1973 | 1968 | 1977 |
| 2020–24 | 1957 | 1975 | 1970 | 1980 |
| Change | +4 | +3 | +4 | +6 |
Summerville is a place of older homes: half were built before 1957, while the national median is 1980. That means established neighborhoods, and more houses that may need updating.
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 Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | $725 | $825 | $953 | $965 |
| 2010–14 | $625 | $920 | $1,028 | $1,040 |
| 2015–19 | $747 | $1,010 | $1,165 | $1,213 |
| 2020–24 | $636 | $1,239 | $1,428 | $1,571 |
| Change | −$89 | +$414 | +$475 | +$606 |
A typical rental in Summerville costs $636 a month with utilities, well below the national median of $1,571. Rent takes 13.1% of the typical renter's income, comfortably under 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 Summerville
Bachelor's degrees in Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.6% | 30.3% | 31.2% | 28.4% |
| 2010–14 | 21.8% | 32.1% | 32.4% | 29.6% |
| 2015–19 | 14.3% | 34.9% | 34.7% | 32.1% |
| 2020–24 | 23.5% | 38.5% | 37.7% | 35.6% |
| Change | +10.9 pts | +8.3 pts | +6.5 pts | +7.2 pts |
Fewer adults in Summerville have a four-year degree than in the country as a whole: 23.5%, against 35.6% nationally.
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 Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 90.0% | 88.8% | 86.3% | 84.9% |
| 2010–14 | 87.2% | 90.5% | 87.5% | 86.1% |
| 2015–19 | 90.5% | 92.1% | 89.1% | 87.7% |
| 2020–24 | 94.3% | 93.6% | 90.3% | 89.3% |
| Change | +4.3 pts | +4.8 pts | +4.0 pts | +4.3 pts |
High school completion is high in Summerville: 94.3% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The picture is much the same across the St. Louis area.
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 Summerville
| Period | Summerville | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.7% | 7.7% | 8.7% | 8.1% |
| 2010–14 | 14.4% | 8.8% | 10.2% | 9.4% |
| 2015–19 | 6.2% | 4.9% | 6.1% | 5.6% |
| 2020–24 | 4.3% | 4.3% | 6.0% | 5.4% |
| Change | −0.4 pts | −3.4 pts | −2.7 pts | −2.7 pts |
Jobs have been a little easier to find in Summerville than nationally: unemployment was 4.3%, against 5.4%. The picture is much the same across the St. Louis area. 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).
Summerville 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Summerville | 2.31 | 44.8 | 13.8% | 4.1% | 19.6% | 1957 | $636 | 23.5% | 94.3% | 4.3% |
| Medora | 2.54 | 44.0 | 9.8% | 3.9% | 26.5% | 1964 | $727 | 19.9% | 95.5% | 4.3% |
| Hagaman | 2.41 | 42.7 | 9.1% | 1.8% | 14.5% | 1964 | $686 | 34.3% | 96.6% | 1.7% |
| Chesterfield | 2.37 | 43.7 | 10.9% | 2.8% | 16.7% | 1961 | $667 | 30.2% | 95.7% | 2.9% |
| Fidelity | 2.92 | 42.6 | 3.5% | 4.3% | 37.3% | 1977 | $881 | 14.5% | 97.3% | 4.0% |
| Piasa | 2.62 | 46.6 | 8.7% | 12.9% | 18.5% | 1975 | $864 | 28.5% | 93.8% | 1.6% |
| Shipman | 2.62 | 47.5 | 7.4% | 12.6% | 18.5% | 1975 | $774 | 31.0% | 93.1% | 2.8% |
| Plainview | 2.63 | 49.7 | 5.7% | 10.0% | 20.8% | 1980 | $692 | 35.7% | 94.1% | 5.3% |
| Rockbridge | 2.98 | 39.9 | 14.6% | 7.6% | 38.3% | 1963 | $883 | 8.7% | 94.0% | 1.2% |
| Enos | 2.48 | 41.5 | 6.3% | 0.9% | 11.3% | 1968 | $718 | 40.7% | 98.0% | 0.1% |
| Royal Lakes | 3.03 | 33.3 | 5.3% | 25.1% | 29.1% | 1988 | $349 | 10.5% | 86.7% | 0.0% |
All figures 2020–24.
Cities with similar populations: Jewell, OR · Jaketown, MS · Jamaica, VA · James, SD · Jamesburg, IL · Jeisyville, IL · Jenkins, NJ · Jericho, PA · Jersey Mills, PA · Jesterville, 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 Summerville. 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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