Population 2,082 · Census ACS 2020–24
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Population and households in ZIP 20842
Household size in ZIP 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.78 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.66 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.74 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.91 | 2.77 | 2.68 | 2.65 |
| Change | +0.13 | +0.04 | +0.01 | −0.03 |
Households in ZIP 20842 are large by national standards, averaging 2.91 people against 2.65 for the U.S. That usually means more families with children at home. Since 2006–10, household size has climbed from 2.78, 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 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 46.0 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 47.9 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 50.1 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 44.3 | 39.2 | 40.6 | 40.1 |
| Change | −1.7 | +2.2 | +2.1 | +2.3 |
With a median age of 44.3, ZIP 20842 is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
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 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.7% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 5.1% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 5.2% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 7.0% | 10.4% | 11.7% | 11.6% |
| Change | +3.3 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 20842: 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 20842
Renters in ZIP 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 19.1% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 15.4% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 16.1% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 14.8% | 36.3% | 32.4% | 34.8% |
| Change | −4.3 pts | +2.3 pts | +1.4 pts | +1.5 pts |
Only 14.8% of households in ZIP 20842 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Just over three in ten owners (30.9%) 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 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.8% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 8.7% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 5.9% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 6.9% | 5.9% | 7.1% | 9.6% |
| Change | −0.9 pts | −2.8 pts | −1.9 pts | −1.8 pts |
Vacancy is on the low side in ZIP 20842: 6.9% 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.
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 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1970 | 1977 | 1974 | 1974 |
| 2010–14 | 1973 | 1978 | 1975 | 1975 |
| 2015–19 | 1972 | 1979 | 1976 | 1977 |
| 2020–24 | 1987 | 1982 | 1978 | 1980 |
| Change | +17 | +6 | +4 | +6 |
Homes in ZIP 20842 are newer than the national norm: the median home was built in 1987, versus 1980 across the U.S.
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 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,279 | $1,470 | $1,249 | $965 |
| 2010–14 | $1,133 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $1,410 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $1,996 | $2,236 | $1,869 | $1,571 |
| Change | +$717 | +$766 | +$620 | +$606 |
The median renter in ZIP 20842 pays $1,996 a month for rent and utilities, well above the national median of $1,571. Even so, rents here are lower than in the Washington area as a whole ($2,236). Rent takes 30.1% of the typical renter's income, just over 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 20842
Bachelor's degrees in ZIP 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 49.9% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 50.4% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 50.2% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 59.5% | 53.9% | 43.4% | 35.6% |
| Change | +9.6 pts | +7.3 pts | +7.1 pts | +7.2 pts |
ZIP 20842 is highly educated: about six in ten adults 25 and older (59.5%) hold at least a bachelor's degree, far above 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 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 97.3% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 96.0% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 93.9% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 93.9% | 91.2% | 90.9% | 89.3% |
| Change | −3.5 pts | +1.7 pts | +2.9 pts | +4.3 pts |
High school completion in ZIP 20842 is above the national rate: 93.9% 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 20842
| Period | ZIP 20842 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.3% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 7.2% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 5.1% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 0.9% | 4.8% | 5.0% | 5.4% |
| Change | −1.4 pts | −1.1 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 20842 has been low: just 0.9% of the labor force was out of work and looking, well below 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 20842 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 20842 | 2.91 | 44.3 | 7.0% | 14.8% | 6.9% | 1987 | $1,996 | 59.5% | 93.9% | 0.9% |
| ZIP 20838 | 2.76 | 44.1 | 8.6% | 15.0% | 1.4% | 1975 | $1,672 | 60.5% | 94.5% | 0.2% |
| ZIP 20839 | 3.15 | 42.3 | 8.5% | 12.8% | 5.4% | 1996 | $2,789 | 61.4% | 92.5% | 2.0% |
| ZIP 20837 | 2.73 | 49.7 | 6.3% | 8.2% | 3.9% | 1985 | $2,791 | 55.0% | 91.5% | 3.8% |
| ZIP 20841 | 3.27 | 41.8 | 7.1% | 8.1% | 5.0% | 2008 | $2,751 | 63.4% | 92.4% | 5.1% |
| ZIP 21790 | 2.73 | 49.1 | 5.0% | 19.4% | 5.4% | 1998 | $2,172 | 45.2% | 92.6% | 3.7% |
| ZIP 21710 | 2.81 | 49.9 | 2.9% | 16.0% | 6.3% | 1995 | $2,230 | 51.0% | 93.0% | 1.2% |
| ZIP 20871 | 3.24 | 37.8 | 11.4% | 9.6% | 1.2% | 2007 | $2,583 | 66.8% | 94.9% | 3.9% |
| ZIP 20874 | 2.85 | 38.7 | 11.6% | 33.4% | 3.7% | 1990 | $2,158 | 49.0% | 90.7% | 5.3% |
| ZIP 21777 | 2.94 | 43.4 | 5.5% | 7.5% | 3.9% | 1997 | $2,068 | 44.3% | 94.7% | 3.9% |
| ZIP 21717 | 2.62 | 49.5 | 2.4% | 8.9% | 6.1% | 1982 | $2,298 | 33.6% | 96.8% | 0.0% |
All figures 2020–24.
Zip codes with similar populations: 96113, CA · 39866, GA · 74854, OK · 74880, OK · 27950, NC · 18615, PA · 86507, AZ · 16650, PA · 16347, PA · 15928, PA
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 20842. 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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