Population 280 · Census ACS 2020–24
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Median age by neighborhoodHistory and comparison ↓︎
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Population and households in Rock Grove
Household size in Rock Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.82 | 2.69 | 2.68 |
| 2010–14 | 2.72 | 2.71 | 2.73 |
| 2015–19 | 2.63 | 2.66 | 2.71 |
| 2020–24 | 2.65 | 2.58 | 2.65 |
| Change | −0.17 | −0.11 | −0.03 |
At 2.65 people per household, Rock Grove sits right at the national average. Since 2006–10, household size has dropped from 2.82, 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 Rock Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 39.1 | 37.6 | 37.7 |
| 2010–14 | 39.6 | 38.5 | 38.6 |
| 2015–19 | 41.0 | 39.6 | 39.6 |
| 2020–24 | 40.8 | 40.2 | 40.1 |
| Change | +1.6 | +2.6 | +2.3 |
At 40.8, the median age in Rock Grove is close to the national median of 40.1, so its age mix looks much like the country's.
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 Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 10.9% | 11.7% | 12.3% |
| 2010–14 | 9.9% | 11.7% | 12.3% |
| 2015–19 | 14.3% | 11.1% | 11.6% |
| 2020–24 | 13.1% | 11.3% | 11.6% |
| Change | +2.3 pts | −0.4 pts | −0.6 pts |
Single-parent households are a bit more common in Rock Grove than nationally: 13.1%, against 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 Rock Grove
Renters in Rock Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 21.3% | 30.8% | 33.3% |
| 2010–14 | 17.2% | 33.1% | 35.6% |
| 2015–19 | 18.1% | 33.9% | 36.0% |
| 2020–24 | 18.4% | 32.9% | 34.8% |
| Change | −3.0 pts | +2.1 pts | +1.5 pts |
Rock Grove is largely a place of homeowners: only 18.4% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 45.1% have no mortgage at all, 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 Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 6.1% | 10.0% | 11.4% |
| 2010–14 | 8.0% | 10.1% | 11.4% |
| 2015–19 | 15.2% | 9.8% | 11.1% |
| 2020–24 | 4.9% | 8.1% | 9.6% |
| Change | −1.2 pts | −1.9 pts | −1.8 pts |
Empty homes are scarce in Rock Grove: just 4.9% sit vacant, compared with 9.6% nationally, a sign of a tight housing market.
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 Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1952 | 1966 | 1974 |
| 2010–14 | 1953 | 1967 | 1975 |
| 2015–19 | 1947 | 1968 | 1977 |
| 2020–24 | 1950 | 1970 | 1980 |
| Change | −2 | +4 | +6 |
Rock Grove is a place of older homes: half were built before 1950, 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 Rock Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $603 | $953 | $965 |
| 2010–14 | $542 | $1,028 | $1,040 |
| 2015–19 | $747 | $1,165 | $1,213 |
| 2020–24 | $715 | $1,428 | $1,571 |
| Change | +$112 | +$475 | +$606 |
Rent in Rock Grove runs $715 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 24.6% of household income on rent, comfortably 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 Rock Grove
Bachelor's degrees in Rock Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 11.7% | 31.2% | 28.4% |
| 2010–14 | 14.6% | 32.4% | 29.6% |
| 2015–19 | 15.9% | 34.7% | 32.1% |
| 2020–24 | 20.9% | 37.7% | 35.6% |
| Change | +9.2 pts | +6.5 pts | +7.2 pts |
College degrees are relatively uncommon in Rock Grove: 20.9% 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 Rock Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 90.8% | 86.3% | 84.9% |
| 2010–14 | 92.1% | 87.5% | 86.1% |
| 2015–19 | 93.4% | 89.1% | 87.7% |
| 2020–24 | 91.8% | 90.3% | 89.3% |
| Change | +1.0 pts | +4.0 pts | +4.3 pts |
About nine in ten adults in Rock Grove have finished high school (91.8%), a bit 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 Rock Grove
| Period | Rock Grove | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 9.0% | 8.7% | 8.1% |
| 2010–14 | 14.8% | 10.2% | 9.4% |
| 2015–19 | 3.5% | 6.1% | 5.6% |
| 2020–24 | 5.5% | 6.0% | 5.4% |
| Change | −3.5 pts | −2.7 pts | −2.7 pts |
Unemployment in Rock Grove is close to the national rate: 5.5% of the labor force, against 5.4%. 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).
Rock Grove 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 Grove | 2.65 | 40.8 | 13.1% | 18.4% | 4.9% | 1950 | $715 | 20.9% | 91.8% | 5.5% |
| Rock City | 2.60 | 47.2 | 7.0% | 14.6% | 15.1% | 1949 | $671 | 17.2% | 94.6% | 5.1% |
| Dakota | 2.63 | 40.4 | 12.1% | 15.3% | 6.6% | 1956 | $691 | 18.8% | 90.7% | 6.1% |
| Oakley | 2.53 | 43.0 | 6.0% | 22.5% | 6.9% | 1970 | $900 | 12.1% | 91.3% | 2.5% |
| Davis | 2.41 | 46.6 | 8.4% | 9.6% | 9.9% | 1976 | $803 | 30.3% | 95.4% | 11.3% |
| Lake Summerset | 2.39 | 52.5 | 10.7% | 13.7% | 6.6% | 1963 | $838 | 21.6% | 93.3% | 3.2% |
| Twin Grove | 2.78 | 36.5 | 8.6% | 21.7% | 6.3% | 1965 | $963 | 8.5% | 89.5% | 2.0% |
| Orangeville | 2.45 | 42.0 | 13.9% | 11.7% | 19.6% | 1964 | $765 | 17.4% | 92.2% | 8.2% |
| Juda | 2.68 | 39.9 | 8.2% | 21.5% | 6.5% | 1965 | $964 | 11.6% | 91.3% | 2.6% |
| Winneshiek | 2.43 | 50.0 | 5.5% | 8.4% | 12.4% | 1957 | $727 | 14.5% | 95.2% | 3.1% |
| Buena Vista | 2.14 | 49.2 | 3.6% | 0.7% | 20.2% | 1965 | $781 | 20.1% | 93.1% | 2.8% |
All figures 2020–24.
Cities with similar populations: Melstone, MT · Mayfield, KS · Mays, IN · Maysville, IN · McBride, OK · Aaron, KY · McComas, WV · McCracken, KS · McGregor, GA · Mcgrew, NE
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 Grove. 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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