Population 144 · Census ACS 2020–24
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Population and households in Rockville
Household size in Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.31 | 2.61 | 2.54 | 2.68 |
| 2010–14 | 2.40 | 2.62 | 2.59 | 2.73 |
| 2015–19 | 2.49 | 2.63 | 2.57 | 2.71 |
| 2020–24 | 2.79 | 2.51 | 2.50 | 2.65 |
| Change | +0.48 | −0.10 | −0.04 | −0.03 |
The typical household in Rockville holds 2.79 people, slightly more than the U.S. average of 2.65. Since 2006–10, household size has climbed from 2.31, 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 Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 53.4 | 36.2 | 38.3 | 37.7 |
| 2010–14 | 50.0 | 37.1 | 39.3 | 38.6 |
| 2015–19 | 55.3 | 38.5 | 40.6 | 39.6 |
| 2020–24 | 39.4 | 39.2 | 41.2 | 40.1 |
| Change | −14.0 | +3.0 | +2.9 | +2.3 |
At 39.4, the median age in Rockville 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 Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.2% | 12.9% | 13.0% | 12.3% |
| 2010–14 | 10.4% | 12.3% | 13.0% | 12.3% |
| 2015–19 | 5.8% | 10.5% | 11.8% | 11.6% |
| 2020–24 | 13.8% | 10.1% | 11.7% | 11.6% |
| Change | +5.6 pts | −2.8 pts | −1.3 pts | −0.6 pts |
Single-parent households are more common in Rockville than nationally: 13.8%, 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 Rockville
Renters in Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.1% | 33.8% | 30.1% | 33.3% |
| 2010–14 | 13.0% | 35.4% | 31.4% | 35.6% |
| 2015–19 | 17.5% | 33.8% | 30.6% | 36.0% |
| 2020–24 | 10.1% | 30.9% | 28.1% | 34.8% |
| Change | +2.1 pts | −2.8 pts | −2.0 pts | +1.5 pts |
Rockville is overwhelmingly a place of homeowners: only 10.1% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 37.5% have no mortgage at all, about the same as nationally.
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 Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 31.9% | 13.5% | 14.2% | 11.4% |
| 2010–14 | 19.6% | 11.6% | 14.2% | 11.4% |
| 2015–19 | 21.4% | 10.7% | 13.3% | 11.1% |
| 2020–24 | 26.3% | 9.9% | 11.8% | 9.6% |
| Change | −5.6 pts | −3.6 pts | −2.5 pts | −1.8 pts |
Vacancy is high in Rockville: 26.3% 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 Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 1985 | 1986 | 1984 | 1974 |
| 2010–14 | 1983 | 1987 | 1985 | 1975 |
| 2015–19 | 1984 | 1989 | 1987 | 1977 |
| 2020–24 | 1989 | 1995 | 1991 | 1980 |
| Change | +4 | +9 | +7 | +6 |
Rockville has newer housing than the country as a whole: the median home was built in 1989, versus 1980 nationally. Locally, though, homes here are older than in the Charleston area as a whole, where the median home dates to 1995.
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 Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | $850 | $1,002 | $780 | $965 |
| 2010–14 | $1,010 | $1,088 | $859 | $1,040 |
| 2015–19 | $1,025 | $1,260 | $984 | $1,213 |
| 2020–24 | $1,378 | $1,767 | $1,294 | $1,571 |
| Change | +$528 | +$765 | +$514 | +$606 |
The median renter in Rockville pays $1,378 a month for rent and utilities, below the national median of $1,571. Rent takes 44.7% of the typical renter's income, 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 Rockville
Bachelor's degrees in Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 29.3% | 30.2% | 25.2% | 28.4% |
| 2010–14 | 34.7% | 32.6% | 26.5% | 29.6% |
| 2015–19 | 34.7% | 35.9% | 28.9% | 32.1% |
| 2020–24 | 57.8% | 41.2% | 32.6% | 35.6% |
| Change | +28.5 pts | +11.0 pts | +7.4 pts | +7.2 pts |
College graduates are unusually common in Rockville: 57.8% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby.
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 Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 86.8% | 87.9% | 84.0% | 84.9% |
| 2010–14 | 84.2% | 89.1% | 85.7% | 86.1% |
| 2015–19 | 88.5% | 90.9% | 87.8% | 87.7% |
| 2020–24 | 94.0% | 92.8% | 90.2% | 89.3% |
| Change | +7.2 pts | +4.8 pts | +6.2 pts | +4.3 pts |
High school completion in Rockville is above the national rate: 94.0% of adults have a diploma, against 89.3%. The Charleston area as a whole looks much the same.
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 Rockville
| Period | Rockville | Charleston area | South Carolina | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.8% | 7.8% | 9.1% | 8.1% |
| 2010–14 | 8.5% | 9.5% | 10.6% | 9.4% |
| 2015–19 | 3.5% | 4.3% | 5.8% | 5.6% |
| 2020–24 | 2.4% | 3.6% | 4.9% | 5.4% |
| Change | −5.3 pts | −4.2 pts | −4.2 pts | −2.7 pts |
The job market in Rockville has been strong: just 2.4% of the labor force was out of work and looking, well below the national rate of 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).
Rockville 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Rockville | 2.79 | 39.4 | 13.8% | 10.1% | 26.3% | 1989 | $1,378 | 57.8% | 94.0% | 2.4% |
| Seabrook Island | 1.77 | 69.0 | 0.9% | 4.1% | 47.1% | 1992 | $3,493 | 77.8% | 99.5% | 0.0% |
| Wadmalaw Island | 2.50 | 53.3 | 6.3% | 6.3% | 21.4% | 1991 | $1,389 | 47.0% | 93.1% | 1.7% |
| Yonges Island | 2.78 | 39.9 | 13.5% | 10.5% | 25.3% | 1989 | $1,390 | 55.2% | 92.9% | 2.8% |
| Edisto Island | 2.00 | 60.0 | 4.7% | 13.0% | 38.8% | 1993 | $865 | 46.7% | 94.7% | 6.3% |
| Kiawah Island | 1.92 | 66.9 | 4.7% | 1.1% | 61.7% | 1994 | $1,568 | 87.1% | 99.0% | 2.0% |
| Legareville | 2.55 | 58.7 | 4.3% | 17.2% | 20.6% | 2005 | $931 | 55.2% | 99.0% | 0.1% |
| Meggett | 2.53 | 53.1 | 10.3% | 16.5% | 8.6% | 1988 | $1,539 | 30.6% | 85.4% | 8.5% |
| Freedman | 1.92 | 62.5 | 3.3% | 7.3% | 35.0% | 1994 | $864 | 51.0% | 94.3% | 11.5% |
| Rantowles | 2.20 | 61.2 | 7.0% | 18.5% | 17.5% | 1987 | $1,571 | 23.9% | 91.8% | 5.6% |
| Hollywood | 2.44 | 52.6 | 10.3% | 13.8% | 12.5% | 1992 | $1,317 | 33.9% | 86.0% | 4.1% |
All figures 2020–24.
Cities with similar populations: Rosewood Heights, IL · Marvel, CO · Marylhurst, OR · Mascot, NE · Mason, LA · Maud, IL · Maud, MO · Maxine, WV · Maxville, MT · Abbot Village, ME
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 Rockville. 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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