Population 1,211 · Census ACS 2020–24
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Population and households in Flat Rock
Household size in Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.77 | 2.69 | 2.68 |
| 2010–14 | 2.57 | 2.71 | 2.73 |
| 2015–19 | 2.22 | 2.66 | 2.71 |
| 2020–24 | 2.25 | 2.58 | 2.65 |
| Change | −0.52 | −0.11 | −0.03 |
Flat Rock is a place of small households, averaging 2.25 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has dropped from 2.77 in 2006–10, but in a place this small, much of that may be survey noise rather than real change.
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 Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 42.3 | 37.6 | 37.7 |
| 2010–14 | 44.3 | 38.5 | 38.6 |
| 2015–19 | 47.3 | 39.6 | 39.6 |
| 2020–24 | 43.2 | 40.2 | 40.1 |
| Change | +0.9 | +2.6 | +2.3 |
Flat Rock skews older than the country: its median age is 43.2, 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 Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 7.6% | 11.7% | 12.3% |
| 2010–14 | 5.1% | 11.7% | 12.3% |
| 2015–19 | 5.2% | 11.1% | 11.6% |
| 2020–24 | 4.3% | 11.3% | 11.6% |
| Change | −3.3 pts | −0.4 pts | −0.6 pts |
Single parents head only 4.3% of households in Flat Rock, well below 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 Flat Rock
Renters in Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 12.5% | 30.8% | 33.3% |
| 2010–14 | 15.2% | 33.1% | 35.6% |
| 2015–19 | 15.1% | 33.9% | 36.0% |
| 2020–24 | 7.8% | 32.9% | 34.8% |
| Change | −4.7 pts | +2.1 pts | +1.5 pts |
Only 7.8% of households in Flat Rock rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 51.9% 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 Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 3.5% | 10.0% | 11.4% |
| 2010–14 | 13.9% | 10.1% | 11.4% |
| 2015–19 | 7.3% | 9.8% | 11.1% |
| 2020–24 | 7.1% | 8.1% | 9.6% |
| Change | +3.6 pts | −1.9 pts | −1.8 pts |
Vacancy is on the low side in Flat Rock: 7.1% of homes sit empty, against 9.6% nationally, which points to steady demand for housing. Illinois as a whole looks much the same.
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 Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1967 | 1966 | 1974 |
| 2010–14 | 1969 | 1967 | 1975 |
| 2015–19 | 1968 | 1968 | 1977 |
| 2020–24 | 1979 | 1970 | 1980 |
| Change | +12 | +4 | +6 |
The typical home in Flat Rock was built around 1979, about the same vintage as the country's housing overall (1980). Homes here are newer than in Illinois overall, where the median home dates to 1970.
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 Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $597 | $953 | $965 |
| 2010–14 | $458 | $1,028 | $1,040 |
| 2015–19 | $809 | $1,165 | $1,213 |
| 2020–24 | $614 | $1,428 | $1,571 |
| Change | +$17 | +$475 | +$606 |
The median renter in Flat Rock pays $614 a month for rent and utilities, well below the national median of $1,571. The typical renter here spends 36.1% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
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 Flat Rock
Bachelor's degrees in Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 13.1% | 31.2% | 28.4% |
| 2010–14 | 14.3% | 32.4% | 29.6% |
| 2015–19 | 12.5% | 34.7% | 32.1% |
| 2020–24 | 11.4% | 37.7% | 35.6% |
| Change | −1.7 pts | +6.5 pts | +7.2 pts |
Fewer adults in Flat Rock have a four-year degree than in the country as a whole: 11.4%, 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 Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 78.0% | 86.3% | 84.9% |
| 2010–14 | 88.1% | 87.5% | 86.1% |
| 2015–19 | 90.7% | 89.1% | 87.7% |
| 2020–24 | 94.9% | 90.3% | 89.3% |
| Change | +16.9 pts | +4.0 pts | +4.3 pts |
High school completion is high in Flat Rock: 94.9% 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 Flat Rock
| Period | Flat Rock | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 10.6% | 8.7% | 8.1% |
| 2010–14 | 11.9% | 10.2% | 9.4% |
| 2015–19 | 5.0% | 6.1% | 5.6% |
| 2020–24 | 0.6% | 6.0% | 5.4% |
| Change | −10.0 pts | −2.7 pts | −2.7 pts |
The job market in Flat Rock has been strong: just 0.6% of the labor force was out of work and looking, well below the national rate of 5.4%. 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).
Flat Rock 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Flat Rock | 2.25 | 43.2 | 4.3% | 7.8% | 7.1% | 1979 | $614 | 11.4% | 94.9% | 0.6% |
| Port Jackson | 2.24 | 44.3 | 11.8% | 13.4% | 12.4% | 1967 | $741 | 8.0% | 82.2% | 2.4% |
| Heathsville | 2.40 | 38.1 | 2.5% | 5.9% | 4.1% | 1993 | $449 | 16.9% | 99.9% | 0.0% |
| New Hebron | 2.28 | 40.8 | 8.1% | 9.6% | 4.5% | 1977 | $608 | 13.6% | 84.7% | 0.9% |
| Pinkstaff | 2.58 | 43.2 | 3.1% | 20.7% | 21.4% | 1963 | $945 | 13.1% | 97.6% | 5.7% |
| Gordons | 2.29 | 41.5 | 7.3% | 13.9% | 0.9% | 1965 | $819 | 7.1% | 72.6% | 4.5% |
| Palestine | 2.31 | 45.5 | 11.9% | 14.1% | 6.1% | 1958 | $781 | 13.0% | 91.8% | 2.9% |
| Robinson | 2.35 | 40.4 | 12.3% | 22.0% | 15.7% | 1961 | $905 | 26.5% | 90.1% | 3.8% |
| Russellville | 1.57 | 37.7 | 3.1% | 62.0% | 10.7% | 2010 | $945 | 14.2% | 97.8% | 0.0% |
| Riverton | 2.69 | 41.5 | 1.7% | 9.3% | 6.5% | 1979 | $1,058 | 29.8% | 86.7% | 3.0% |
| Petrolia | 2.18 | 51.4 | 8.1% | 18.8% | 27.0% | 1969 | $945 | 22.5% | 93.4% | 5.1% |
All figures 2020–24.
Cities with similar populations: Dysart, PA · Five Points, PA · Finlayson, MN · Faucett, MO · Fairfield Center, ME · Enola, AR · Endeavor, WI · Elwood, KS · Eltopia, WA · Edgemont, SD
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 Flat Rock. 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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