Population 310 · Census ACS 2020–24
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Population and households in St. Augustine
Household size in St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.40 | 2.69 | 2.68 |
| 2010–14 | 2.52 | 2.71 | 2.73 |
| 2015–19 | 2.32 | 2.66 | 2.71 |
| 2020–24 | 2.47 | 2.58 | 2.65 |
| Change | +0.07 | −0.11 | −0.03 |
Households in St. Augustine run small, averaging 2.47 people against 2.65 nationally, which usually means more singles and couples and fewer children.
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 St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 40.9 | 37.6 | 37.7 |
| 2010–14 | 46.3 | 38.5 | 38.6 |
| 2015–19 | 46.5 | 39.6 | 39.6 |
| 2020–24 | 41.7 | 40.2 | 40.1 |
| Change | +0.9 | +2.6 | +2.3 |
St. Augustine skews a little older than the country: its median age is 41.7, against 40.1 nationally.
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 St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 16.3% | 11.7% | 12.3% |
| 2010–14 | 12.0% | 11.7% | 12.3% |
| 2015–19 | 12.9% | 11.1% | 11.6% |
| 2020–24 | 2.7% | 11.3% | 11.6% |
| Change | −13.6 pts | −0.4 pts | −0.6 pts |
Single parents head only 2.7% of households in St. Augustine, well below the national share of 11.6%. Since 2006–10, the single-parent share has fallen 13.6 points, but in a place this small, much of that may be survey noise rather than real change.
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 St. Augustine
Renters in St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 14.9% | 30.8% | 33.3% |
| 2010–14 | 14.5% | 33.1% | 35.6% |
| 2015–19 | 20.2% | 33.9% | 36.0% |
| 2020–24 | 12.5% | 32.9% | 34.8% |
| Change | −2.4 pts | +2.1 pts | +1.5 pts |
Only 12.5% of households in St. Augustine rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 61.2% have no mortgage at all, 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 St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 11.0% | 10.0% | 11.4% |
| 2010–14 | 6.4% | 10.1% | 11.4% |
| 2015–19 | 12.8% | 9.8% | 11.1% |
| 2020–24 | 15.0% | 8.1% | 9.6% |
| Change | +4.0 pts | −1.9 pts | −1.8 pts |
Vacancy is high in St. Augustine: 15.0% of homes are empty, 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 St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1966 | 1966 | 1974 |
| 2010–14 | 1963 | 1967 | 1975 |
| 2015–19 | 1949 | 1968 | 1977 |
| 2020–24 | 1968 | 1970 | 1980 |
| Change | +2 | +4 | +6 |
The housing in St. Augustine is old by national standards: the median home dates to 1968, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. Illinois as a whole looks much the same.
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 St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $368 | $953 | $965 |
| 2010–14 | $608 | $1,028 | $1,040 |
| 2015–19 | $696 | $1,165 | $1,213 |
| 2020–24 | $737 | $1,428 | $1,571 |
| Change | +$369 | +$475 | +$606 |
Rent in St. Augustine runs $737 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 28.4% of household income on rent, just 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 St. Augustine
Bachelor's degrees in St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 10.9% | 31.2% | 28.4% |
| 2010–14 | 18.2% | 32.4% | 29.6% |
| 2015–19 | 19.3% | 34.7% | 32.1% |
| 2020–24 | 12.6% | 37.7% | 35.6% |
| Change | +1.6 pts | +6.5 pts | +7.2 pts |
College degrees are relatively uncommon in St. Augustine: 12.6% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%.
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 St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 74.6% | 86.3% | 84.9% |
| 2010–14 | 82.6% | 87.5% | 86.1% |
| 2015–19 | 85.9% | 89.1% | 87.7% |
| 2020–24 | 95.6% | 90.3% | 89.3% |
| Change | +21.0 pts | +4.0 pts | +4.3 pts |
High school completion is high in St. Augustine: 95.6% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
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 St. Augustine
| Period | St. Augustine | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 6.0% | 8.7% | 8.1% |
| 2010–14 | 10.3% | 10.2% | 9.4% |
| 2015–19 | 5.4% | 6.1% | 5.6% |
| 2020–24 | 6.9% | 6.0% | 5.4% |
| Change | +0.9 pts | −2.7 pts | −2.7 pts |
Unemployment runs high in St. Augustine: 6.9% of the labor force was out of work and looking, against 5.4% 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).
St. Augustine 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| St. Augustine | 2.47 | 41.7 | 2.7% | 12.5% | 15.0% | 1968 | $737 | 12.6% | 95.6% | 6.9% |
| Checkrow | 2.02 | 52.9 | 10.1% | 13.0% | 12.8% | 1958 | $847 | 23.9% | 87.3% | 1.2% |
| Abingdon | 2.32 | 42.1 | 12.4% | 26.3% | 11.7% | 1953 | $710 | 17.8% | 93.6% | 10.0% |
| Avon | 2.21 | 48.2 | 8.6% | 13.8% | 20.7% | 1955 | $878 | 18.6% | 87.0% | 3.0% |
| London Mills | 2.92 | 36.4 | 8.2% | 12.5% | 16.7% | 1954 | $1,036 | 20.1% | 93.3% | 5.8% |
| Greenbush | 1.92 | 57.4 | 6.3% | 15.3% | 0.7% | 1974 | $822 | 38.1% | 94.6% | 0.6% |
| Berwick | 2.43 | 41.6 | 12.0% | 19.3% | 4.2% | 1948 | $638 | 16.6% | 84.4% | 5.5% |
| Prairie City | 2.31 | 45.9 | 9.8% | 11.8% | 6.6% | 1963 | $722 | 15.4% | 96.6% | 6.0% |
| Ellisville | 2.22 | 48.4 | 9.1% | 13.4% | 18.1% | 1940 | $843 | 13.2% | 86.6% | 1.2% |
| Maquon | 2.16 | 53.5 | 7.6% | 14.7% | 17.2% | 1948 | $739 | 15.9% | 94.3% | 4.2% |
| Gilson | 2.33 | 52.3 | 4.8% | 15.4% | 15.6% | 1958 | $1,010 | 21.1% | 96.5% | 1.7% |
All figures 2020–24.
Cities with similar populations: Sanctuary, TX · Mooreton, ND · Rockville, NE · Rockwood, IL · Rosalie, TX · Rosella, MS · Sabine Pass, TX · Salmon, KY · Saluvia, PA · San Isidro, 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 St. Augustine. 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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