Population 3,195 · Census ACS 2020–24
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Population and households in ZIP 21757
Household size in ZIP 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.65 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.82 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.57 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.95 | 2.77 | 2.68 | 2.65 |
| Change | +0.30 | +0.04 | +0.01 | −0.03 |
ZIP 21757 is a place of big households: 2.95 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Since 2006–10, household size has climbed from 2.65, 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 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 46.2 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 44.0 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 47.0 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 40.9 | 39.2 | 40.6 | 40.1 |
| Change | −5.3 | +2.2 | +2.1 | +2.3 |
Half of the people in ZIP 21757 are younger than 40.9 and half are older, close to the national median of 40.1. The population here is older than in the Washington area overall, where the median age is 39.2.
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 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.6% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 4.6% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 4.1% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 7.0% | 10.4% | 11.7% | 11.6% |
| Change | +1.4 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 21757: 7.0% 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 21757
Renters in ZIP 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 26.7% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 23.8% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 20.9% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 19.4% | 36.3% | 32.4% | 34.8% |
| Change | −7.2 pts | +2.3 pts | +1.4 pts | +1.5 pts |
Only 19.4% of households in ZIP 21757 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. About three in ten owners (30.5%) have paid off their mortgages, 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 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.0% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 8.8% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 6.8% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 9.3% | 5.9% | 7.1% | 9.6% |
| Change | +3.4 pts | −2.8 pts | −1.9 pts | −1.8 pts |
About as many homes sit empty in ZIP 21757 as nationally: 9.3%, against 9.6%. The rate is higher than in the wider Washington area (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 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1959 | 1977 | 1974 | 1974 |
| 2010–14 | 1962 | 1978 | 1975 | 1975 |
| 2015–19 | 1966 | 1979 | 1976 | 1977 |
| 2020–24 | 1969 | 1982 | 1978 | 1980 |
| Change | +10 | +6 | +4 | +6 |
The housing in ZIP 21757 is old by national standards: the median home dates to 1969, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates.
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 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,177 | $1,470 | $1,249 | $965 |
| 2010–14 | $1,192 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $1,121 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $1,533 | $2,236 | $1,869 | $1,571 |
| Change | +$356 | +$766 | +$620 | +$606 |
Rent in ZIP 21757 runs $1,533 a month at the median, utilities included, close to the U.S. median of $1,571. Rents here are lower than in the wider Washington area ($2,236). The typical renter here spends 26.7% 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 21757
Bachelor's degrees in ZIP 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 13.2% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 16.3% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 19.6% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 30.4% | 53.9% | 43.4% | 35.6% |
| Change | +17.2 pts | +7.3 pts | +7.1 pts | +7.2 pts |
College degrees are a little less common in ZIP 21757 than nationally: 30.4% 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 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 80.0% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 83.2% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 85.0% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 90.1% | 91.2% | 90.9% | 89.3% |
| Change | +10.1 pts | +1.7 pts | +2.9 pts | +4.3 pts |
High school completion in ZIP 21757 is close to the national rate: 90.1% 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 21757
| Period | ZIP 21757 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.2% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 5.7% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 3.4% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 3.0% | 4.8% | 5.0% | 5.4% |
| Change | −3.2 pts | −1.1 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 21757 has been low: just 3.0% 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 21757 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 21757 | 2.95 | 40.9 | 7.0% | 19.4% | 9.3% | 1969 | $1,533 | 30.4% | 90.1% | 3.0% |
| ZIP 21778 | 2.32 | 49.7 | 3.3% | 12.2% | 9.8% | 1973 | $1,576 | 30.2% | 85.5% | 3.4% |
| ZIP 21798 | 2.94 | 45.9 | 10.4% | 16.9% | 12.1% | 1985 | $1,278 | 42.0% | 93.4% | 4.1% |
| 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 21762 | 3.15 | 39.6 | 23.7% | 2.5% | 5.6% | 1975 | $2,380 | 47.2% | 98.6% | 1.7% |
| ZIP 21788 | 2.48 | 44.2 | 9.0% | 19.8% | 4.9% | 1974 | $1,304 | 28.1% | 92.2% | 2.6% |
| ZIP 21727 | 2.52 | 35.5 | 7.4% | 23.1% | 13.2% | 1974 | $830 | 35.1% | 88.7% | 2.9% |
| ZIP 21793 | 2.73 | 42.2 | 7.2% | 12.5% | 4.3% | 1979 | $1,599 | 39.7% | 94.8% | 2.2% |
| ZIP 21776 | 2.58 | 44.6 | 4.2% | 10.1% | 3.3% | 1978 | $1,476 | 39.2% | 96.5% | 6.7% |
| ZIP 21158 | 2.70 | 41.9 | 9.5% | 21.1% | 5.1% | 1983 | $1,722 | 36.2% | 94.2% | 3.6% |
All figures 2020–24.
Zip codes with similar populations: 13476, NY · 20762, MD · 39750, MS · 98610, WA · 98595, WA · 95428, CA · 92521, CA · 79068, TX · 65769, MO · 65281, MO
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 21757. 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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