Population 9,548 · Census ACS 2020–24
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Population and households in ZIP 20640
Household size in ZIP 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.99 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.86 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.67 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.47 | 2.77 | 2.68 | 2.65 |
| Change | −0.52 | +0.04 | +0.01 | −0.03 |
The average household in ZIP 20640 has 2.47 people, under the U.S. average of 2.65. Household size has dropped from 2.99 in 2006–10, a much bigger shift than nationally. Households are largest in the north and smallest in the east.
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 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 36.2 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 36.6 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 36.5 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 41.1 | 39.2 | 40.6 | 40.1 |
| Change | +4.9 | +2.2 | +2.1 | +2.3 |
Half of the people in ZIP 20640 are younger than 41.1 and half are older, close to the national median of 40.1. The population here is older than in the Washington area as a whole, where the median age is 39.2. Since 2006–10, the median age has climbed from 36.2, mirroring the country.
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 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 18.8% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 15.6% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 15.5% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 8.8% | 10.4% | 11.7% | 11.6% |
| Change | −10.0 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single parents head about one in twelve households in ZIP 20640 (8.8%), below the national share of 11.6%. Since 2006–10, the single-parent share has fallen 10.0 points, a much bigger shift than 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 20640
Renters in ZIP 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 20.2% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 24.4% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 26.4% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 23.9% | 36.3% | 32.4% | 34.8% |
| Change | +3.7 pts | +2.3 pts | +1.4 pts | +1.5 pts |
ZIP 20640 is largely a place of homeowners: only 23.9% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 28.5% have no mortgage at all, well below the national share of 39.8%. The renter share has risen 3.7 points since 2006–10, mirroring the country.
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 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 17.1% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 14.5% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 11.6% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 8.3% | 5.9% | 7.1% | 9.6% |
| Change | −8.8 pts | −2.8 pts | −1.9 pts | −1.8 pts |
About as many homes sit empty in ZIP 20640 as nationally: 8.3%, against 9.6%. The rate is higher than in the Washington area as a whole (5.9%). Since 2006–10, vacancy has fallen 8.8 points, a much bigger shift than nationally.
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 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1971 | 1977 | 1974 | 1974 |
| 2010–14 | 1976 | 1978 | 1975 | 1975 |
| 2015–19 | 1976 | 1979 | 1976 | 1977 |
| 2020–24 | 1978 | 1982 | 1978 | 1980 |
| Change | +7 | +6 | +4 | +6 |
The typical home in ZIP 20640 was built around 1978, about the same vintage as the country's housing overall (1980). Homes here are older than in the Washington area as a whole, where the median home dates to 1982. The median year built has moved up from 1971 in 2006–10, a sign of steady new building. Newer construction is concentrated in the north, while the east has the oldest housing.
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 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,116 | $1,470 | $1,249 | $965 |
| 2010–14 | $1,215 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $1,533 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $1,502 | $2,236 | $1,869 | $1,571 |
| Change | +$387 | +$766 | +$620 | +$606 |
Rent in ZIP 20640 runs $1,502 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). Rent has climbed $387 a month since 2006–10, up 35%, a slower climb than the nation's. The typical renter here spends 35.2% 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 20640
Bachelor's degrees in ZIP 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 15.3% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 15.1% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 22.2% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 22.9% | 53.9% | 43.4% | 35.6% |
| Change | +7.6 pts | +7.3 pts | +7.1 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 20640: 22.9% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. Since 2006–10, the share with a degree has risen 7.6 points, as it has nationally. Only 22 of the 240 Maryland ZIP codes with 5,000+ people have a lower share of college graduates.
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 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 86.7% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 88.3% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 94.1% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 92.9% | 91.2% | 90.9% | 89.3% |
| Change | +6.1 pts | +1.7 pts | +2.9 pts | +4.3 pts |
Just over nine in ten adults in ZIP 20640 have finished high school (92.9%), above the national rate of 89.3%. Since 2006–10, the share with a diploma has risen 6.1 points, mirroring the country.
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 20640
| Period | ZIP 20640 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.0% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 7.8% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 4.1% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 3.7% | 4.8% | 5.0% | 5.4% |
| Change | −5.3 pts | −1.1 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 20640 runs below the national rate: 3.7% of the labor force was out of work and looking, against 5.4% nationally. Unemployment is down 5.3 points from 2006–10, as it has nationally. 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 20640 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 20640 | 2.47 | 41.1 | 8.8% | 23.9% | 8.3% | 1978 | $1,502 | 22.9% | 92.9% | 3.7% |
| ZIP 20658 | 2.29 | 45.7 | 5.0% | 9.3% | 10.0% | 1972 | $1,654 | 26.5% | 91.0% | 3.8% |
| ZIP 20616 | 3.05 | 38.0 | 12.6% | 4.4% | 0.4% | 1998 | $2,528 | 31.8% | 95.6% | 8.4% |
| ZIP 22191 | 3.17 | 34.5 | 17.3% | 43.1% | 6.0% | 1989 | $2,244 | 35.9% | 85.7% | 6.2% |
| ZIP 20675 | 2.85 | 50.6 | 4.8% | 5.4% | 5.0% | 1990 | $2,136 | 42.2% | 90.0% | 4.6% |
| ZIP 20693 | 3.43 | 41.1 | 14.7% | 10.2% | 19.9% | 1982 | $1,031 | 27.9% | 85.3% | 1.3% |
| ZIP 20677 | 2.79 | 49.2 | 7.2% | 6.5% | 6.6% | 1982 | $1,458 | 36.8% | 97.1% | 3.9% |
| ZIP 22026 | 3.45 | 34.3 | 17.4% | 27.7% | 4.0% | 2004 | $2,428 | 46.7% | 93.0% | 5.0% |
| ZIP 22125 | 2.35 | 38.1 | 15.1% | 35.9% | 2.0% | 1976 | $2,105 | 37.3% | 83.2% | 10.5% |
| ZIP 20607 | 3.19 | 42.6 | 10.9% | 3.5% | 2.4% | 1996 | $1,612 | 46.8% | 93.8% | 8.5% |
| ZIP 20695 | 3.07 | 36.6 | 9.3% | 19.4% | 2.6% | 2005 | $2,294 | 39.9% | 94.1% | 5.0% |
All figures 2020–24.
Zip codes with similar populations: 08406, NJ · 49038, MI · 66547, KS · 64034, MO · 60449, IL · 56716, MN · 56649, MN · 55340, MN · 55079, MN · 53551, WI
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 20640. 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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