Population 245 · Census ACS 2020–24
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Population and households in ZIP 21648
Household size in ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1.94 | 2.68 | 2.68 |
| 2010–14 | 2.45 | 2.73 | 2.73 |
| 2015–19 | 2.24 | 2.74 | 2.71 |
| 2020–24 | 2.46 | 2.68 | 2.65 |
| Change | +0.53 | +0.01 | −0.03 |
Households in ZIP 21648 run small, averaging 2.46 people against 2.65 nationally, which usually means more singles and couples and fewer children. Since 2006–10, household size has climbed from 1.94, 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 ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 48.4 | 38.5 | 37.7 |
| 2010–14 | 49.9 | 39.3 | 38.6 |
| 2015–19 | 53.9 | 40.2 | 39.6 |
| 2020–24 | 53.2 | 40.6 | 40.1 |
| Change | +4.7 | +2.1 | +2.3 |
ZIP 21648 skews older: half of its residents are older than 53.2, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.
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 ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.5% | 12.5% | 12.3% |
| 2010–14 | 6.7% | 12.6% | 12.3% |
| 2015–19 | 6.7% | 11.7% | 11.6% |
| 2020–24 | 4.0% | 11.7% | 11.6% |
| Change | +1.5 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 21648: 4.0% 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 ZIP 21648
Renters in ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 8.3% | 31.0% | 33.3% |
| 2010–14 | 14.4% | 32.9% | 35.6% |
| 2015–19 | 12.1% | 33.1% | 36.0% |
| 2020–24 | 2.7% | 32.4% | 34.8% |
| Change | −5.6 pts | +1.4 pts | +1.5 pts |
ZIP 21648 is overwhelmingly a place of homeowners: only 2.7% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 64.0% 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 ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 48.5% | 9.0% | 11.4% |
| 2010–14 | 51.1% | 8.9% | 11.4% |
| 2015–19 | 43.1% | 8.9% | 11.1% |
| 2020–24 | 49.5% | 7.1% | 9.6% |
| Change | +1.0 pts | −1.9 pts | −1.8 pts |
Vacant homes make up 49.5% of the housing in ZIP 21648, 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 ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1968 | 1974 | 1974 |
| 2010–14 | 1971 | 1975 | 1975 |
| 2015–19 | 1972 | 1976 | 1977 |
| 2020–24 | 1980 | 1978 | 1980 |
| Change | +12 | +4 | +6 |
Homes in ZIP 21648 are the same age as the nation's housing: the median home was built in 1980.
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 ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $704 | $1,249 | $965 |
| 2010–14 | $968 | $1,363 | $1,040 |
| 2015–19 | $2,075 | $1,576 | $1,213 |
| 2020–24 | $1,256 | $1,869 | $1,571 |
| Change | +$552 | +$620 | +$606 |
Rent in ZIP 21648 runs $1,256 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 28.7% 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 ZIP 21648
Bachelor's degrees in ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 20.9% | 36.3% | 28.4% |
| 2010–14 | 15.8% | 37.7% | 29.6% |
| 2015–19 | 23.0% | 40.5% | 32.1% |
| 2020–24 | 25.1% | 43.4% | 35.6% |
| Change | +4.2 pts | +7.1 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 21648: 25.1% 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 ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 85.4% | 88.0% | 84.9% |
| 2010–14 | 68.8% | 89.1% | 86.1% |
| 2015–19 | 96.7% | 90.2% | 87.7% |
| 2020–24 | 90.1% | 90.9% | 89.3% |
| Change | +4.7 pts | +2.9 pts | +4.3 pts |
About as many adults in ZIP 21648 have finished high school as nationally: 90.1%, 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 ZIP 21648
| Period | ZIP 21648 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 7.6% | 6.5% | 8.1% |
| 2010–14 | 3.7% | 8.1% | 9.4% |
| 2015–19 | 3.4% | 5.1% | 5.6% |
| 2020–24 | 4.0% | 5.0% | 5.4% |
| Change | −3.6 pts | −1.5 pts | −2.7 pts |
Jobs have been easier to find in ZIP 21648 than nationally: unemployment was 4.0%, against 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).
ZIP 21648 compared with nearby ZIP codes
| ZIP code | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| ZIP 21648 | 2.46 | 53.2 | 4.0% | 2.7% | 49.5% | 1980 | $1,256 | 25.1% | 90.1% | 4.0% |
| ZIP 21677 | 2.33 | 52.4 | 5.4% | 20.5% | 23.4% | 1976 | $1,256 | 18.0% | 85.2% | 3.0% |
| ZIP 21669 | 2.47 | 53.2 | 3.9% | 1.7% | 50.5% | 1980 | $1,256 | 25.4% | 90.2% | 4.1% |
| ZIP 21622 | 2.35 | 55.1 | 3.4% | 10.6% | 39.6% | 1965 | $1,291 | 23.7% | 90.4% | 1.9% |
| ZIP 21613 | 2.30 | 42.3 | 14.2% | 48.3% | 17.0% | 1970 | $1,140 | 20.8% | 86.3% | 8.5% |
| ZIP 21654 | 1.89 | 65.2 | 8.3% | 13.7% | 30.8% | 1975 | $1,915 | 61.8% | 95.5% | 10.5% |
| ZIP 21673 | 2.28 | 47.4 | 13.7% | 24.8% | 20.9% | 1982 | $1,364 | 35.6% | 94.8% | 5.3% |
| ZIP 21835 | 1.96 | 62.7 | 7.1% | 26.1% | 11.0% | 1980 | $1,020 | 14.2% | 79.9% | 2.4% |
| ZIP 20685 | 2.84 | 44.3 | 6.3% | 9.3% | 15.7% | 1983 | $1,855 | 29.8% | 94.7% | 1.8% |
| ZIP 21631 | 2.49 | 50.1 | 10.5% | 18.3% | 7.8% | 1983 | $1,198 | 20.6% | 90.3% | 6.8% |
| ZIP 21664 | 3.10 | 33.1 | 22.8% | 29.0% | 7.4% | 1982 | $1,481 | 27.1% | 95.1% | 4.3% |
All figures 2020–24.
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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 ZIP 21648. 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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