Population 1,030 · Census ACS 2020–24
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Population and households in ZIP 21778
Household size in ZIP 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.82 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.77 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.46 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.32 | 2.77 | 2.68 | 2.65 |
| Change | −0.50 | +0.04 | +0.01 | −0.03 |
Households in ZIP 21778 are small: just 2.32 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 has dropped from 2.82 in 2006–10, 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 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 44.7 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 44.3 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 49.4 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 49.7 | 39.2 | 40.6 | 40.1 |
| Change | +4.9 | +2.2 | +2.1 | +2.3 |
With a median age of 49.7, ZIP 21778 is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
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 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.6% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 8.9% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 11.5% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 3.3% | 10.4% | 11.7% | 11.6% |
| Change | −9.2 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single parents head only 3.3% of households in ZIP 21778, 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 ZIP 21778
Renters in ZIP 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.6% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 7.1% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 22.6% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 12.2% | 36.3% | 32.4% | 34.8% |
| Change | −2.4 pts | +2.3 pts | +1.4 pts | +1.5 pts |
Only 12.2% of households in ZIP 21778 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 43.0% 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 ZIP 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.6% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 10.9% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 14.3% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 9.8% | 5.9% | 7.1% | 9.6% |
| Change | −0.8 pts | −2.8 pts | −1.9 pts | −1.8 pts |
Vacancy in ZIP 21778 is close to the national rate: 9.8% of homes are empty, against 9.6%. The rate is higher than in the Washington area overall (5.9%).
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 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1969 | 1977 | 1974 | 1974 |
| 2010–14 | 1958 | 1978 | 1975 | 1975 |
| 2015–19 | 1965 | 1979 | 1976 | 1977 |
| 2020–24 | 1973 | 1982 | 1978 | 1980 |
| Change | +4 | +6 | +4 | +6 |
Homes in ZIP 21778 run older than the national norm, with a median build year of 1973 against 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 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,098 | $1,470 | $1,249 | $965 |
| 2010–14 | $1,256 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $1,444 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $1,576 | $2,236 | $1,869 | $1,571 |
| Change | +$477 | +$766 | +$620 | +$606 |
A typical rental in ZIP 21778 costs $1,576 a month with utilities, close to the national median of $1,571. Rents here are lower than in the Washington area overall ($2,236). The typical renter here spends 38.7% 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 ZIP 21778
Bachelor's degrees in ZIP 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 21.3% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 21.6% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 17.4% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 30.2% | 53.9% | 43.4% | 35.6% |
| Change | +8.9 pts | +7.3 pts | +7.1 pts | +7.2 pts |
College degrees are a little less common in ZIP 21778 than nationally: 30.2% of adults 25 and older have a bachelor's or higher, against 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 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 87.7% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 87.1% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 84.0% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 85.5% | 91.2% | 90.9% | 89.3% |
| Change | −2.2 pts | +1.7 pts | +2.9 pts | +4.3 pts |
About one in seven adults in ZIP 21778 never finished high school, more than nationally: 85.5% have a diploma or equivalent, against 89.3% across the U.S.
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 21778
| Period | ZIP 21778 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.6% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 7.9% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 7.5% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 3.4% | 4.8% | 5.0% | 5.4% |
| Change | +0.8 pts | −1.1 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 21778 runs below the national rate: 3.4% of the labor force was out of work and looking, against 5.4% nationally. 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).
ZIP 21778 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 21778 | 2.32 | 49.7 | 3.3% | 12.2% | 9.8% | 1973 | $1,576 | 30.2% | 85.5% | 3.4% |
| ZIP 21788 | 2.48 | 44.2 | 9.0% | 19.8% | 4.9% | 1974 | $1,304 | 28.1% | 92.2% | 2.6% |
| ZIP 21757 | 2.95 | 40.9 | 7.0% | 19.4% | 9.3% | 1969 | $1,533 | 30.4% | 90.1% | 3.0% |
| ZIP 21727 | 2.52 | 35.5 | 7.4% | 23.1% | 13.2% | 1974 | $830 | 35.1% | 88.7% | 2.9% |
| ZIP 21798 | 2.94 | 45.9 | 10.4% | 16.9% | 12.1% | 1985 | $1,278 | 42.0% | 93.4% | 4.1% |
| ZIP 21780 | 2.67 | 42.9 | 2.4% | 22.4% | 7.6% | 1965 | $1,333 | 30.0% | 90.0% | 1.0% |
| ZIP 21791 | 2.66 | 43.8 | 7.9% | 15.4% | 5.5% | 1964 | $1,626 | 29.5% | 92.4% | 2.6% |
| ZIP 21787 | 2.65 | 42.7 | 12.1% | 21.4% | 5.5% | 1984 | $1,151 | 22.0% | 94.4% | 4.2% |
| ZIP 17320 | 2.58 | 41.5 | 10.0% | 13.1% | 5.1% | 1983 | $1,152 | 26.7% | 92.6% | 1.8% |
| ZIP 21719 | 2.46 | 39.2 | 6.3% | 12.4% | 19.4% | 1956 | $1,453 | 21.7% | 91.6% | 1.8% |
| ZIP 17214 | 2.03 | 49.4 | 9.0% | 31.4% | 11.9% | 1963 | $876 | 29.4% | 89.0% | 2.0% |
All figures 2020–24.
Zip codes with similar populations: 61052, IL · 75476, TX · 71726, AR · 71326, LA · 71219, LA · 66023, KS · 65261, MO · 62875, IL · 62367, IL · 62244, IL
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 21778. 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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