Population 65,988 · Census ACS 2020–24
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Population and households in ZIP 20878
Household size in ZIP 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.72 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.82 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.83 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.78 | 2.77 | 2.68 | 2.65 |
| Change | +0.06 | +0.04 | +0.01 | −0.03 |
Households in ZIP 20878 average 2.78 people, a bit above the national 2.65, so families with children are somewhat more common here. Since 2006–10, household size has crept up from 2.72, even as the national average fell. Households are largest in the south 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 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 38.0 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 39.4 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 40.6 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 42.5 | 39.2 | 40.6 | 40.1 |
| Change | +4.5 | +2.2 | +2.1 | +2.3 |
The median resident of ZIP 20878 is 42.5 years old, a bit older than the national median of 40.1. Since 2006–10, the median age has climbed from 38.0, mirroring the country. Residents skew youngest in the northeast and oldest in the northwest.
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 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.5% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 10.4% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 8.2% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 7.9% | 10.4% | 11.7% | 11.6% |
| Change | −0.6 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 20878: 7.9% of households, against 11.6% nationally. Since 2006–10, the single-parent share has edged down 0.6 points, as it has 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 20878
Renters in ZIP 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 28.2% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 29.0% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 31.1% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 31.0% | 36.3% | 32.4% | 34.8% |
| Change | +2.8 pts | +2.3 pts | +1.4 pts | +1.5 pts |
Just over three in ten households in ZIP 20878 rent their homes (31.0%), a little below the national share of 34.8%; the rest own. Among owners, 30.8% have paid off their mortgages, below the national share of 39.8%. Rentals cluster in the northeast; owners are most common in the southwest. The renter share is up 2.8 points from 2006–10, in line with the national trend.
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 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.8% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 4.5% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 5.3% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 4.8% | 5.9% | 7.1% | 9.6% |
| Change | −0.0 pts | −2.8 pts | −1.9 pts | −1.8 pts |
Empty homes are scarce in ZIP 20878: just 4.8% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. That is in line with the rest of the Washington area.
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 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1985 | 1977 | 1974 | 1974 |
| 2010–14 | 1986 | 1978 | 1975 | 1975 |
| 2015–19 | 1986 | 1979 | 1976 | 1977 |
| 2020–24 | 1987 | 1982 | 1978 | 1980 |
| Change | +2 | +6 | +4 | +6 |
The housing in ZIP 20878 is younger than the country's: half of it was built after 1987, against 1980 nationally. The newest homes are mostly in the center, the oldest in the northeast.
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 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,626 | $1,470 | $1,249 | $965 |
| 2010–14 | $1,768 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $2,072 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $2,564 | $2,236 | $1,869 | $1,571 |
| Change | +$938 | +$766 | +$620 | +$606 |
The median renter in ZIP 20878 pays $2,564 a month for rent and utilities, well above the national median of $1,571. Rents are up $938 a month from 2006–10, a 58% rise, a slower climb than the nation's. The typical renter here spends 31.4% of household income on rent, just over the 30% mark often used to define affordable rent. The priciest rents are in the northwest; the most affordable are in the northeast.
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 20878
Bachelor's degrees in ZIP 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 65.2% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 65.9% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 69.4% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 69.5% | 53.9% | 43.4% | 35.6% |
| Change | +4.3 pts | +7.3 pts | +7.1 pts | +7.2 pts |
College graduates are unusually common in ZIP 20878: 69.5% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby. The share with a degree has risen 4.3 points since 2006–10, as it has nationally. Of the 240 Maryland ZIP codes with 5,000+ people, only 13 have a higher 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 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 94.1% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 94.9% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 94.2% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 95.4% | 91.2% | 90.9% | 89.3% |
| Change | +1.3 pts | +1.7 pts | +2.9 pts | +4.3 pts |
High school completion is high in ZIP 20878: 95.4% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 1.3 points from 2006–10, a smaller shift than nationally.
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 20878
| Period | ZIP 20878 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.3% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 5.5% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 3.9% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 4.0% | 4.8% | 5.0% | 5.4% |
| Change | −0.3 pts | −1.1 pts | −1.5 pts | −2.7 pts |
Jobs have been easier to find in ZIP 20878 than nationally: unemployment was 4.0%, against 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 20878 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 20878 | 2.78 | 42.5 | 7.9% | 31.0% | 4.8% | 1987 | $2,564 | 69.5% | 95.4% | 4.0% |
| ZIP 20899 | 2.64 | 43.5 | 3.2% | 10.4% | 3.0% | 1998 | $2,655 | 71.1% | 0.0% | 2.0% |
| ZIP 20877 | 3.29 | 38.8 | 11.0% | 54.7% | 6.2% | 1982 | $1,906 | 32.1% | 73.8% | 6.3% |
| ZIP 20850 | 2.40 | 42.6 | 6.7% | 49.2% | 6.1% | 1989 | $2,531 | 68.0% | 95.1% | 4.3% |
| ZIP 20880 | 2.44 | 46.6 | 8.9% | 27.8% | 2.9% | 1965 | $1,905 | 52.7% | 93.5% | 6.0% |
| ZIP 20874 | 2.85 | 38.7 | 11.6% | 33.4% | 3.7% | 1990 | $2,158 | 49.0% | 90.7% | 5.3% |
| ZIP 20879 | 3.01 | 36.5 | 11.0% | 27.8% | 2.9% | 1987 | $2,055 | 45.0% | 89.8% | 6.8% |
| ZIP 20886 | 2.78 | 39.5 | 13.8% | 32.7% | 5.5% | 1981 | $2,025 | 43.4% | 87.8% | 6.4% |
| ZIP 20855 | 2.72 | 42.0 | 5.2% | 26.4% | 2.4% | 1987 | $2,390 | 66.7% | 94.7% | 4.7% |
| ZIP 20876 | 3.05 | 37.6 | 11.2% | 32.6% | 2.8% | 1992 | $2,090 | 51.3% | 87.0% | 5.5% |
| ZIP 20854 | 3.01 | 48.1 | 5.5% | 10.9% | 4.7% | 1979 | $3,231 | 85.2% | 97.4% | 2.9% |
All figures 2020–24.
Zip codes with similar populations: 11691, NY · 32765, FL · 89115, NV · 60640, IL · 00953, PR · 75056, TX · 75070, TX · 77521, TX · 78045, TX · 80016, CO
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 20878. 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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