Population 1,733 · Census ACS 2020–24
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Population and households in ZIP 21780
Household size in ZIP 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.77 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.60 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.49 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.67 | 2.77 | 2.68 | 2.65 |
| Change | −0.10 | +0.04 | +0.01 | −0.03 |
Households in ZIP 21780 average 2.67 people, about the same as the country as a whole (2.65). The typical household here is smaller than in the wider Washington area, where it has 2.77 people. Since 2006–10, household size has dropped from 2.77, but in a place this small, much of that may be survey noise rather than real change.
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 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 40.0 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 39.9 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 45.8 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 42.9 | 39.2 | 40.6 | 40.1 |
| Change | +2.9 | +2.2 | +2.1 | +2.3 |
ZIP 21780 skews older than the country: its median age is 42.9, against 40.1 nationally.
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 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.1% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 7.9% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 6.9% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 2.4% | 10.4% | 11.7% | 11.6% |
| Change | −2.7 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single parents head only 2.4% of households in ZIP 21780, 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 21780
Renters in ZIP 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.4% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 23.7% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 10.4% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 22.4% | 36.3% | 32.4% | 34.8% |
| Change | +8.0 pts | +2.3 pts | +1.4 pts | +1.5 pts |
ZIP 21780 is largely a place of homeowners: only 22.4% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 35.3% have no mortgage at all, below 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 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.9% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 14.2% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 11.2% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 7.6% | 5.9% | 7.1% | 9.6% |
| Change | −7.2 pts | −2.8 pts | −1.9 pts | −1.8 pts |
Fewer homes sit empty in ZIP 21780 than nationally: 7.6%, against 9.6% for the U.S. Even so, the rate is higher than in the Washington area as a whole (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 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1952 | 1977 | 1974 | 1974 |
| 2010–14 | 1963 | 1978 | 1975 | 1975 |
| 2015–19 | 1968 | 1979 | 1976 | 1977 |
| 2020–24 | 1965 | 1982 | 1978 | 1980 |
| Change | +13 | +6 | +4 | +6 |
ZIP 21780 is a place of older homes: half were built before 1965, 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 ZIP 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $600 | $1,470 | $1,249 | $965 |
| 2010–14 | $748 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $1,312 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $1,333 | $2,236 | $1,869 | $1,571 |
| Change | +$733 | +$766 | +$620 | +$606 |
A typical rental in ZIP 21780 costs $1,333 a month with utilities, below the national median of $1,571. The typical renter here spends 20.5% 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 ZIP 21780
Bachelor's degrees in ZIP 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.7% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 13.9% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 22.0% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 30.0% | 53.9% | 43.4% | 35.6% |
| Change | +15.3 pts | +7.3 pts | +7.1 pts | +7.2 pts |
College degrees are a little less common in ZIP 21780 than nationally: 30.0% 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 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 87.3% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 94.0% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 89.8% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 90.0% | 91.2% | 90.9% | 89.3% |
| Change | +2.7 pts | +1.7 pts | +2.9 pts | +4.3 pts |
High school completion in ZIP 21780 is close to the national rate: 90.0% 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 ZIP 21780
| Period | ZIP 21780 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.1% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 6.3% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 2.4% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 1.0% | 4.8% | 5.0% | 5.4% |
| Change | −5.1 pts | −1.1 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 21780 has been low: just 1.0% 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).
ZIP 21780 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 21780 | 2.67 | 42.9 | 2.4% | 22.4% | 7.6% | 1965 | $1,333 | 30.0% | 90.0% | 1.0% |
| 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% |
| ZIP 17250 | 2.31 | 43.6 | 2.6% | 16.6% | 3.4% | 1972 | $944 | 18.0% | 91.7% | 3.8% |
| ZIP 21783 | 2.76 | 43.4 | 11.7% | 19.7% | 9.2% | 1973 | $1,137 | 23.6% | 91.2% | 3.1% |
| ZIP 21788 | 2.48 | 44.2 | 9.0% | 19.8% | 4.9% | 1974 | $1,304 | 28.1% | 92.2% | 2.6% |
| ZIP 17320 | 2.58 | 41.5 | 10.0% | 13.1% | 5.1% | 1983 | $1,152 | 26.7% | 92.6% | 1.8% |
| ZIP 21727 | 2.52 | 35.5 | 7.4% | 23.1% | 13.2% | 1974 | $830 | 35.1% | 88.7% | 2.9% |
| ZIP 17268 | 2.62 | 40.4 | 10.2% | 29.6% | 8.0% | 1973 | $1,212 | 20.8% | 91.7% | 4.6% |
| ZIP 21778 | 2.32 | 49.7 | 3.3% | 12.2% | 9.8% | 1973 | $1,576 | 30.2% | 85.5% | 3.4% |
| ZIP 17272 | 2.16 | 40.6 | 9.1% | 32.8% | 10.6% | 1979 | $1,683 | 8.6% | 96.2% | 7.8% |
All figures 2020–24.
Zip codes with similar populations: 61534, IL · 12461, NY · 12521, NY · 13335, NY · 83434, ID · 87062, NM · 38231, TN · 73038, OK · 44064, OH · 49436, MI
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 21780. 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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