Population 223 · Census ACS 2020–24
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Median age by neighborhoodHistory and comparison ↓︎
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Population and households in Rock Creek
Household size in Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.29 | 2.69 | 2.68 |
| 2010–14 | 2.32 | 2.71 | 2.73 |
| 2015–19 | 3.06 | 2.66 | 2.71 |
| 2020–24 | 2.35 | 2.58 | 2.65 |
| Change | +0.06 | −0.11 | −0.03 |
Households in Rock Creek are small: just 2.35 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: 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 Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 43.2 | 37.6 | 37.7 |
| 2010–14 | 50.0 | 38.5 | 38.6 |
| 2015–19 | 41.6 | 39.6 | 39.6 |
| 2020–24 | 55.3 | 40.2 | 40.1 |
| Change | +12.1 | +2.6 | +2.3 |
With a median age of 55.3, Rock Creek is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. Since 2006–10, the median age has climbed from 43.2, but in a place this small, survey estimates can swing a lot from one release to the next.
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 Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 5.6% | 11.7% | 12.3% |
| 2010–14 | 7.8% | 11.7% | 12.3% |
| 2015–19 | 6.3% | 11.1% | 11.6% |
| 2020–24 | 6.1% | 11.3% | 11.6% |
| Change | +0.5 pts | −0.4 pts | −0.6 pts |
Single-parent households are relatively rare in Rock Creek: 6.1% of households, against 11.6% nationally.
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 Rock Creek
Renters in Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 11.9% | 30.8% | 33.3% |
| 2010–14 | 12.4% | 33.1% | 35.6% |
| 2015–19 | 10.5% | 33.9% | 36.0% |
| 2020–24 | 3.8% | 32.9% | 34.8% |
| Change | −8.1 pts | +2.1 pts | +1.5 pts |
Rock Creek is overwhelmingly a place of homeowners: only 3.8% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. About seven in ten owners (69.0%) 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 Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 23.9% | 10.0% | 11.4% |
| 2010–14 | 22.2% | 10.1% | 11.4% |
| 2015–19 | 38.8% | 9.8% | 11.1% |
| 2020–24 | 29.3% | 8.1% | 9.6% |
| Change | +5.4 pts | −1.9 pts | −1.8 pts |
Vacancy is high in Rock Creek: 29.3% 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 Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1978 | 1966 | 1974 |
| 2010–14 | 1978 | 1967 | 1975 |
| 2015–19 | 1976 | 1968 | 1977 |
| 2020–24 | 1980 | 1970 | 1980 |
| Change | +2 | +4 | +6 |
The typical home in Rock Creek was built around 1980, the same vintage as the country's housing overall. 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 Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $351 | $953 | $965 |
| 2010–14 | $385 | $1,028 | $1,040 |
| 2015–19 | $295 | $1,165 | $1,213 |
| 2020–24 | $315 | $1,428 | $1,571 |
| Change | −$36 | +$475 | +$606 |
The median renter in Rock Creek pays $315 a month for rent and utilities, well below the national median of $1,571. Rent takes 21.8% 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 Rock Creek
Bachelor's degrees in Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 17.6% | 31.2% | 28.4% |
| 2010–14 | 10.6% | 32.4% | 29.6% |
| 2015–19 | 7.5% | 34.7% | 32.1% |
| 2020–24 | 11.9% | 37.7% | 35.6% |
| Change | −5.7 pts | +6.5 pts | +7.2 pts |
Fewer adults in Rock Creek have a four-year degree than in the country as a whole: 11.9%, 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 Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 77.7% | 86.3% | 84.9% |
| 2010–14 | 83.1% | 87.5% | 86.1% |
| 2015–19 | 81.3% | 89.1% | 87.7% |
| 2020–24 | 93.2% | 90.3% | 89.3% |
| Change | +15.5 pts | +4.0 pts | +4.3 pts |
High school completion in Rock Creek is above the national rate: 93.2% of adults have a diploma or equivalent, against 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 Rock Creek
| Period | Rock Creek | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 5.7% | 8.7% | 8.1% |
| 2010–14 | 5.3% | 10.2% | 9.4% |
| 2015–19 | 14.7% | 6.1% | 5.6% |
| 2020–24 | 0.3% | 6.0% | 5.4% |
| Change | −5.4 pts | −2.7 pts | −2.7 pts |
The job market in Rock Creek has been strong: just 0.3% 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).
Rock Creek 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Rock Creek | 2.35 | 55.3 | 6.1% | 3.8% | 29.3% | 1980 | $315 | 11.9% | 93.2% | 0.3% |
| Lamb | 2.09 | 59.0 | 9.7% | 17.6% | 41.3% | 1971 | $460 | 17.2% | 94.1% | 1.8% |
| Cave In Rock | 2.12 | 58.7 | 9.3% | 16.1% | 40.1% | 1972 | $445 | 16.6% | 94.0% | 1.6% |
| Peters Creek | 2.10 | 47.1 | 8.0% | 20.7% | 28.7% | 1982 | $264 | 8.7% | 95.7% | 3.7% |
| Gross | 2.31 | 56.1 | 7.9% | 11.1% | 30.4% | 1986 | $407 | 15.3% | 89.2% | 3.7% |
| Sparks Hill | 2.36 | 55.9 | 7.4% | 6.3% | 28.8% | 1983 | $404 | 14.0% | 89.9% | 2.7% |
| Elizabethtown | 1.94 | 42.6 | 9.7% | 32.1% | 29.4% | 1981 | $259 | 7.4% | 97.2% | 6.0% |
| DeKoven | 2.67 | 36.0 | 8.8% | 16.9% | 10.2% | 1970 | $679 | 3.9% | 83.8% | 0.0% |
| Henshaw | 2.30 | 55.6 | 4.6% | 11.1% | 18.9% | 1974 | $819 | 6.9% | 87.2% | 0.0% |
| Tolu | 2.68 | 51.2 | 1.3% | 8.4% | 13.9% | 1986 | $725 | 8.8% | 89.6% | 6.5% |
| Grangertown | 2.53 | 41.0 | 9.2% | 25.9% | 9.9% | 1966 | $673 | 9.6% | 89.6% | 1.8% |
All figures 2020–24.
Cities with similar populations: McNab, AR · Maxcy Quarters, FL · Acequia, ID · May Valley, CO · Mayesburg, MO · Mayville, ME · Mayville, MN · Maze, PA · Mc Caulley, TX · McCartney, PA
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 Rock Creek. 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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