Population 1,078 · Census ACS 2020–24
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Population and households in ZIP 20621
Household size in ZIP 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.80 | 2.68 | 2.68 |
| 2010–14 | 2.98 | 2.73 | 2.73 |
| 2015–19 | 2.78 | 2.74 | 2.71 |
| 2020–24 | 2.32 | 2.68 | 2.65 |
| Change | −0.48 | +0.01 | −0.03 |
ZIP 20621 is a place of small households, averaging 2.32 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has dropped from 2.80 in 2006–10, 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 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 35.9 | 38.5 | 37.7 |
| 2010–14 | 35.5 | 39.3 | 38.6 |
| 2015–19 | 40.7 | 40.2 | 39.6 |
| 2020–24 | 50.5 | 40.6 | 40.1 |
| Change | +14.6 | +2.1 | +2.3 |
ZIP 20621 skews older: half of its residents are older than 50.5, 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 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 16.1% | 12.5% | 12.3% |
| 2010–14 | 13.4% | 12.6% | 12.3% |
| 2015–19 | 10.5% | 11.7% | 11.6% |
| 2020–24 | 15.3% | 11.7% | 11.6% |
| Change | −0.8 pts | −0.9 pts | −0.6 pts |
Single-parent households are common in ZIP 20621: 15.3% of all 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 20621
Renters in ZIP 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 11.6% | 31.0% | 33.3% |
| 2010–14 | 11.4% | 32.9% | 35.6% |
| 2015–19 | 13.7% | 33.1% | 36.0% |
| 2020–24 | 5.9% | 32.4% | 34.8% |
| Change | −5.7 pts | +1.4 pts | +1.5 pts |
ZIP 20621 is overwhelmingly a place of homeowners: only 5.9% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. More than a quarter of owners (27.3%) have paid off their mortgages, well 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 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 10.9% | 9.0% | 11.4% |
| 2010–14 | 12.1% | 8.9% | 11.4% |
| 2015–19 | 23.2% | 8.9% | 11.1% |
| 2020–24 | 8.8% | 7.1% | 9.6% |
| Change | −2.2 pts | −1.9 pts | −1.8 pts |
Vacancy in ZIP 20621 is close to the national rate: 8.8% of homes are empty, against 9.6%. The rate is higher than in Maryland overall (7.1%).
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 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1985 | 1974 | 1974 |
| 2010–14 | 1982 | 1975 | 1975 |
| 2015–19 | 1987 | 1976 | 1977 |
| 2020–24 | 1989 | 1978 | 1980 |
| Change | +4 | +4 | +6 |
ZIP 20621 has newer housing than the country as a whole: the median home was built in 1989, versus 1980 nationally.
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 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $1,500 | $1,249 | $965 |
| 2010–14 | $1,219 | $1,363 | $1,040 |
| 2015–19 | $1,910 | $1,576 | $1,213 |
| 2020–24 | $1,728 | $1,869 | $1,571 |
| Change | +$229 | +$620 | +$606 |
A typical rental in ZIP 20621 costs $1,728 a month with utilities, above the national median of $1,571. Even so, rents here are lower than in Maryland overall ($1,869). Rent takes 33.8% 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 ZIP 20621
Bachelor's degrees in ZIP 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 20.9% | 36.3% | 28.4% |
| 2010–14 | 16.0% | 37.7% | 29.6% |
| 2015–19 | 16.2% | 40.5% | 32.1% |
| 2020–24 | 24.0% | 43.4% | 35.6% |
| Change | +3.2 pts | +7.1 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 20621: 24.0% 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 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 87.0% | 88.0% | 84.9% |
| 2010–14 | 92.8% | 89.1% | 86.1% |
| 2015–19 | 91.4% | 90.2% | 87.7% |
| 2020–24 | 92.7% | 90.9% | 89.3% |
| Change | +5.7 pts | +2.9 pts | +4.3 pts |
High school completion in ZIP 20621 is above the national rate: 92.7% 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 20621
| Period | ZIP 20621 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 4.1% | 6.5% | 8.1% |
| 2010–14 | 5.8% | 8.1% | 9.4% |
| 2015–19 | 1.4% | 5.1% | 5.6% |
| 2020–24 | 10.1% | 5.0% | 5.4% |
| Change | +6.0 pts | −1.5 pts | −2.7 pts |
Finding work has been harder in ZIP 20621: 10.1% of the labor force was out of work and looking, well above 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).
ZIP 20621 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 20621 | 2.32 | 50.5 | 15.3% | 5.9% | 8.8% | 1989 | $1,728 | 24.0% | 92.7% | 10.1% |
| ZIP 20618 | 2.45 | 52.6 | 7.9% | 12.5% | 22.4% | 1977 | $1,683 | 19.4% | 81.0% | 10.6% |
| ZIP 20624 | 2.64 | 45.7 | 7.1% | 11.4% | 7.0% | 1988 | $1,647 | 17.1% | 91.4% | 2.2% |
| ZIP 20609 | 2.23 | 56.3 | 6.3% | 15.7% | 16.8% | 1978 | $1,665 | 17.4% | 82.7% | 7.1% |
| ZIP 20625 | 2.59 | 45.8 | 6.7% | 0.0% | 36.3% | 1938 | $1,216 | 2.4% | 95.1% | 0.0% |
| ZIP 20606 | 2.14 | 55.8 | 6.3% | 15.7% | 10.7% | 1983 | $1,679 | 17.5% | 94.1% | 1.7% |
| ZIP 20660 | 2.79 | 37.0 | 22.7% | 39.3% | 9.0% | 1981 | $1,435 | 22.8% | 98.5% | 0.4% |
| ZIP 20656 | 2.89 | 38.8 | 14.4% | 30.1% | 10.2% | 1996 | $2,439 | 39.4% | 97.0% | 1.3% |
| ZIP 20645 | 2.71 | 49.2 | 15.9% | 29.0% | 5.6% | 1992 | $1,179 | 38.5% | 95.4% | 1.3% |
| ZIP 20626 | 2.00 | 64.2 | 3.2% | 21.0% | 18.4% | 1970 | $1,604 | 13.5% | 63.8% | 11.2% |
| ZIP 20664 | 2.68 | 47.5 | 6.8% | 26.4% | 17.6% | 1975 | $1,214 | 22.1% | 94.0% | 0.5% |
All figures 2020–24.
Zip codes with similar populations: 70453, LA · 45696, OH · 54511, WI · 57368, SD · 57760, SD · 58530, ND · 58621, ND · 62539, IL · 62545, IL · 62982, 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 20621. 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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