Population 21,827 · Census ACS 2020–24
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Population and households in ZIP 20646
Household size in ZIP 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.79 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.73 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.83 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.69 | 2.77 | 2.68 | 2.65 |
| Change | −0.10 | +0.04 | +0.01 | −0.03 |
At 2.69 people per household, ZIP 20646 sits close to the national average of 2.65. Since 2006–10, household size has dropped from 2.79, a much bigger shift than nationally. The biggest households, usually families with children, are concentrated in the southeast.
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 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.6 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 40.7 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 42.2 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 43.5 | 39.2 | 40.6 | 40.1 |
| Change | +3.9 | +2.2 | +2.1 | +2.3 |
ZIP 20646 skews older than the country: its median age is 43.5, against 40.1 nationally. Since 2006–10, the median age has climbed from 39.6, as it has nationally. Residents skew youngest in the center and oldest in the north.
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 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 13.3% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 11.4% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 12.6% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 9.8% | 10.4% | 11.7% | 11.6% |
| Change | −3.5 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single parents head about one in ten households in ZIP 20646 (9.8%), a little below the national share of 11.6%. That is in line with the rest of the Washington area. The single-parent share is down 3.5 points from 2006–10, 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 20646
Renters in ZIP 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.4% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 18.9% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 18.3% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 12.3% | 36.3% | 32.4% | 34.8% |
| Change | −2.1 pts | +2.3 pts | +1.4 pts | +1.5 pts |
Only 12.3% of households in ZIP 20646 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 23.9% have no mortgage at all, well below the national share of 39.8%. Rentals cluster in the center; owners are most common in the southeast. The renter share is down 2.1 points from 2006–10, even as the national share rose.
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 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.2% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 6.2% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 8.5% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 7.0% | 5.9% | 7.1% | 9.6% |
| Change | −2.2 pts | −2.8 pts | −1.9 pts | −1.8 pts |
Vacancy is on the low side in ZIP 20646: 7.0% of homes sit empty, against 9.6% nationally, which points to steady demand for housing. The Washington area as a whole looks much the same. Vacancy is down 2.2 points from 2006–10, as it has 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 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1985 | 1977 | 1974 | 1974 |
| 2010–14 | 1986 | 1978 | 1975 | 1975 |
| 2015–19 | 1989 | 1979 | 1976 | 1977 |
| 2020–24 | 1990 | 1982 | 1978 | 1980 |
| Change | +5 | +6 | +4 | +6 |
ZIP 20646 has newer housing than the country as a whole: the median home was built in 1990, versus 1980 nationally. The median year built has moved up from 1985 in 2006–10, a sign of steady new building.
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 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,292 | $1,470 | $1,249 | $965 |
| 2010–14 | $1,258 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $1,763 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $1,656 | $2,236 | $1,869 | $1,571 |
| Change | +$364 | +$766 | +$620 | +$606 |
The median renter in ZIP 20646 pays $1,656 a month for rent and utilities, above the national median of $1,571. Locally, though, rents here are lower than in the Washington area as a whole ($2,236). Rent has climbed $364 a month since 2006–10, up 28%, a slower climb than the nation's. Rent takes 22.9% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent.
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 20646
Bachelor's degrees in ZIP 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 27.5% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 30.1% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 28.8% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 34.0% | 53.9% | 43.4% | 35.6% |
| Change | +6.4 pts | +7.3 pts | +7.1 pts | +7.2 pts |
College degrees are about as common in ZIP 20646 as nationally: 34.0% of adults 25 and older have a bachelor's or higher, against 35.6%. The share is lower than in the Washington area as a whole (53.9%). Since 2006–10, the share with a degree has risen 6.4 points, in line with the national trend.
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 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 90.4% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 91.9% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 91.8% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 94.9% | 91.2% | 90.9% | 89.3% |
| Change | +4.4 pts | +1.7 pts | +2.9 pts | +4.3 pts |
High school completion is high in ZIP 20646: 94.9% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. Since 2006–10, the share with a diploma has risen 4.4 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 20646
| Period | ZIP 20646 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.2% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 5.1% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 3.2% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 3.6% | 4.8% | 5.0% | 5.4% |
| Change | −1.6 pts | −1.1 pts | −1.5 pts | −2.7 pts |
Jobs have been easier to find in ZIP 20646 than nationally: unemployment was 3.6%, against 5.4%. Since 2006–10, unemployment has fallen 1.6 points, 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 20646 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 20646 | 2.69 | 43.5 | 9.8% | 12.3% | 7.0% | 1990 | $1,656 | 34.0% | 94.9% | 3.6% |
| ZIP 20677 | 2.79 | 49.2 | 7.2% | 6.5% | 6.6% | 1982 | $1,458 | 36.8% | 97.1% | 3.9% |
| ZIP 20611 | 3.08 | 42.9 | 5.2% | 14.5% | 9.7% | 1982 | $1,370 | 31.7% | 95.5% | 3.5% |
| ZIP 20675 | 2.85 | 50.6 | 4.8% | 5.4% | 5.0% | 1990 | $2,136 | 42.2% | 90.0% | 4.6% |
| ZIP 20695 | 3.07 | 36.6 | 9.3% | 19.4% | 2.6% | 2005 | $2,294 | 39.9% | 94.1% | 5.0% |
| ZIP 20602 | 2.86 | 34.8 | 16.2% | 29.8% | 4.1% | 1988 | $1,896 | 31.7% | 94.7% | 6.2% |
| ZIP 20632 | 3.25 | 37.2 | 5.2% | 10.0% | 20.6% | 1981 | $1,312 | 24.8% | 96.2% | 1.7% |
| ZIP 20693 | 3.43 | 41.1 | 14.7% | 10.2% | 19.9% | 1982 | $1,031 | 27.9% | 85.3% | 1.3% |
| ZIP 20603 | 2.87 | 38.0 | 11.8% | 15.1% | 5.0% | 1998 | $2,076 | 39.7% | 96.1% | 5.0% |
| ZIP 20617 | 2.95 | 38.2 | 5.8% | 12.6% | 4.1% | 1988 | $1,891 | 42.1% | 97.0% | 2.4% |
| ZIP 20601 | 2.76 | 39.9 | 12.9% | 20.7% | 5.5% | 1990 | $2,194 | 32.2% | 95.4% | 5.4% |
All figures 2020–24.
Zip codes with similar populations: 08085, NJ · 93263, CA · 90603, CA · 00624, PR · 48331, MI · 49445, MI · 55410, MN · 67114, KS · 67901, KS · 71220, LA
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 20646. 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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