Population 20,572 · Census ACS 2020–24
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Population and households in ZIP 20657
Household size in ZIP 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.94 | 2.68 | 2.68 |
| 2010–14 | 2.88 | 2.73 | 2.73 |
| 2015–19 | 2.75 | 2.74 | 2.71 |
| 2020–24 | 2.81 | 2.68 | 2.65 |
| Change | −0.13 | +0.01 | −0.03 |
The typical household in ZIP 20657 holds 2.81 people, slightly more than the U.S. average of 2.65. Since 2006–10, household size has dropped from 2.94, a much bigger shift than nationally. Households are largest in the southwest and smallest in the center.
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 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 36.5 | 38.5 | 37.7 |
| 2010–14 | 36.5 | 39.3 | 38.6 |
| 2015–19 | 39.3 | 40.2 | 39.6 |
| 2020–24 | 38.3 | 40.6 | 40.1 |
| Change | +1.8 | +2.1 | +2.3 |
The median resident of ZIP 20657 is 38.3 years old, a few years younger than the national median of 40.1. Since 2006–10, the median age has climbed from 36.5, in line with the national trend.
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 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 12.5% | 12.5% | 12.3% |
| 2010–14 | 12.0% | 12.6% | 12.3% |
| 2015–19 | 11.4% | 11.7% | 11.6% |
| 2020–24 | 8.6% | 11.7% | 11.6% |
| Change | −4.0 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 20657: 8.6% of households, against 11.6% nationally. Since 2006–10, the single-parent share has fallen 4.0 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 20657
Renters in ZIP 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 16.7% | 31.0% | 33.3% |
| 2010–14 | 20.2% | 32.9% | 35.6% |
| 2015–19 | 16.6% | 33.1% | 36.0% |
| 2020–24 | 13.8% | 32.4% | 34.8% |
| Change | −2.8 pts | +1.4 pts | +1.5 pts |
Only 13.8% of households in ZIP 20657 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. More than one in six owners (18.3%) have paid off their mortgages, well below the national share of 39.8%. Rentals cluster in the west; owners are most common in the east. Since 2006–10, the renter share has fallen 2.8 points, 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 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 10.0% | 9.0% | 11.4% |
| 2010–14 | 13.2% | 8.9% | 11.4% |
| 2015–19 | 12.2% | 8.9% | 11.1% |
| 2020–24 | 9.7% | 7.1% | 9.6% |
| Change | −0.3 pts | −1.9 pts | −1.8 pts |
About as many homes sit empty in ZIP 20657 as nationally: 9.7%, against 9.6%. The rate is higher than in Maryland as a whole (7.1%). ZIP 20657 has a higher vacancy rate than at least four in five Maryland ZIP codes.
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 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1991 | 1974 | 1974 |
| 2010–14 | 1990 | 1975 | 1975 |
| 2015–19 | 1990 | 1976 | 1977 |
| 2020–24 | 1990 | 1978 | 1980 |
| Change | −2 | +4 | +6 |
ZIP 20657 has newer housing than the country as a whole: the median home was built in 1990, versus 1980 nationally. Compared with other Maryland ZIP codes, ZIP 20657 has newer homes than most.
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 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $1,186 | $1,249 | $965 |
| 2010–14 | $1,399 | $1,363 | $1,040 |
| 2015–19 | $1,490 | $1,576 | $1,213 |
| 2020–24 | $1,849 | $1,869 | $1,571 |
| Change | +$663 | +$620 | +$606 |
Rent in ZIP 20657 runs $1,849 a month at the median, utilities included, above the U.S. median of $1,571. Rents are up $663 a month from 2006–10, a 56% rise, a slower climb than the nation's. Rent takes 28.3% of the typical renter's income, just under the 30% mark often used to define affordable rent. Rents run highest in the west and lowest in the center.
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 20657
Bachelor's degrees in ZIP 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 26.1% | 36.3% | 28.4% |
| 2010–14 | 23.9% | 37.7% | 29.6% |
| 2015–19 | 27.0% | 40.5% | 32.1% |
| 2020–24 | 33.2% | 43.4% | 35.6% |
| Change | +7.1 pts | +7.1 pts | +7.2 pts |
College degrees are about as common in ZIP 20657 as nationally: 33.2% of adults 25 and older have a bachelor's or higher, against 35.6%. The share is lower than in Maryland overall (43.4%). The share with a degree has risen 7.1 points since 2006–10, mirroring the country.
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 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 91.5% | 88.0% | 84.9% |
| 2010–14 | 93.8% | 89.1% | 86.1% |
| 2015–19 | 94.8% | 90.2% | 87.7% |
| 2020–24 | 94.4% | 90.9% | 89.3% |
| Change | +2.9 pts | +2.9 pts | +4.3 pts |
High school completion is high in ZIP 20657: 94.4% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma has risen 2.9 points since 2006–10, as it has 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 20657
| Period | ZIP 20657 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 5.4% | 6.5% | 8.1% |
| 2010–14 | 11.0% | 8.1% | 9.4% |
| 2015–19 | 3.1% | 5.1% | 5.6% |
| 2020–24 | 3.3% | 5.0% | 5.4% |
| Change | −2.1 pts | −1.5 pts | −2.7 pts |
The job market in ZIP 20657 has been strong: just 3.3% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 2.1 points, mirroring the country. 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 20657 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 20657 | 2.81 | 38.3 | 8.6% | 13.8% | 9.7% | 1990 | $1,849 | 33.2% | 94.4% | 3.3% |
| ZIP 20629 | 2.15 | 54.6 | 7.4% | 4.5% | 12.8% | 2000 | $2,130 | 44.3% | 95.0% | 0.0% |
| ZIP 20688 | 2.20 | 54.8 | 7.4% | 24.5% | 15.3% | 1997 | $2,452 | 43.3% | 96.0% | 2.0% |
| ZIP 20670 | 3.34 | 23.5 | 11.5% | 89.0% | 15.5% | 1995 | $2,290 | 36.4% | 100.0% | 14.3% |
| ZIP 20615 | 2.81 | 52.3 | 1.2% | 5.2% | 6.7% | 1984 | $1,677 | 16.4% | 89.6% | 0.0% |
| ZIP 20685 | 2.84 | 44.3 | 6.3% | 9.3% | 15.7% | 1983 | $1,855 | 29.8% | 94.7% | 1.8% |
| ZIP 20619 | 2.65 | 37.2 | 12.1% | 36.9% | 7.9% | 2000 | $2,037 | 47.3% | 94.0% | 1.7% |
| ZIP 20636 | 3.06 | 37.9 | 12.3% | 14.2% | 15.9% | 1993 | $1,845 | 38.2% | 90.7% | 2.9% |
| ZIP 20634 | 2.89 | 35.9 | 11.0% | 29.1% | 10.5% | 1998 | $1,561 | 35.0% | 88.7% | 4.0% |
| ZIP 20653 | 2.44 | 34.1 | 17.9% | 45.0% | 9.2% | 1993 | $1,676 | 35.8% | 92.2% | 4.6% |
| ZIP 21669 | 2.47 | 53.2 | 3.9% | 1.7% | 50.5% | 1980 | $1,256 | 25.4% | 90.2% | 4.1% |
All figures 2020–24.
Zip codes with similar populations: 93927, CA · 08077, NJ · 11360, NY · 75137, TX · 44067, OH · 45638, OH · 45822, OH · 46135, IN · 46706, IN · 48393, MI
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 20657. 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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