Population 3,006 · Census ACS 2020–24
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Population and households in ZIP 21837
Household size in ZIP 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.68 | 2.68 | 2.68 |
| 2010–14 | 2.69 | 2.73 | 2.73 |
| 2015–19 | 2.90 | 2.74 | 2.71 |
| 2020–24 | 2.70 | 2.68 | 2.65 |
| Change | +0.02 | +0.01 | −0.03 |
At 2.70 people per household, ZIP 21837 sits close to the national average of 2.65.
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 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 39.3 | 38.5 | 37.7 |
| 2010–14 | 44.9 | 39.3 | 38.6 |
| 2015–19 | 37.5 | 40.2 | 39.6 |
| 2020–24 | 40.7 | 40.6 | 40.1 |
| Change | +1.4 | +2.1 | +2.3 |
Half of the people in ZIP 21837 are younger than 40.7 and half are older, close to the national median of 40.1. The median age has climbed from 39.3 in 2006–10, but in a place this small, survey estimates can swing a lot from one release to the next.
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 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 5.7% | 12.5% | 12.3% |
| 2010–14 | 7.1% | 12.6% | 12.3% |
| 2015–19 | 12.2% | 11.7% | 11.6% |
| 2020–24 | 9.0% | 11.7% | 11.6% |
| Change | +3.3 pts | −0.9 pts | −0.6 pts |
Single parents head just over one in twelve households in ZIP 21837 (9.0%), below the national share of 11.6%.
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 21837
Renters in ZIP 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 11.5% | 31.0% | 33.3% |
| 2010–14 | 15.8% | 32.9% | 35.6% |
| 2015–19 | 20.9% | 33.1% | 36.0% |
| 2020–24 | 12.9% | 32.4% | 34.8% |
| Change | +1.3 pts | +1.4 pts | +1.5 pts |
Only 12.9% of households in ZIP 21837 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 37.7% have no mortgage at all, about the same as nationally.
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 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 13.1% | 9.0% | 11.4% |
| 2010–14 | 7.3% | 8.9% | 11.4% |
| 2015–19 | 11.3% | 8.9% | 11.1% |
| 2020–24 | 4.2% | 7.1% | 9.6% |
| Change | −8.9 pts | −1.9 pts | −1.8 pts |
Only 4.2% of homes in ZIP 21837 are vacant, far below the national rate of 9.6%, which usually means strong demand for housing.
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 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1985 | 1974 | 1974 |
| 2010–14 | 1979 | 1975 | 1975 |
| 2015–19 | 1980 | 1976 | 1977 |
| 2020–24 | 1989 | 1978 | 1980 |
| Change | +4 | +4 | +6 |
ZIP 21837 has newer housing than the country as a whole: the median home was built in 1989, versus 1980 nationally.
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 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $799 | $1,249 | $965 |
| 2010–14 | $977 | $1,363 | $1,040 |
| 2015–19 | $1,181 | $1,576 | $1,213 |
| 2020–24 | $1,227 | $1,869 | $1,571 |
| Change | +$428 | +$620 | +$606 |
The median renter in ZIP 21837 pays $1,227 a month for rent and utilities, well below the national median of $1,571. The typical renter here spends 27.9% of household income on rent, just under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
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 21837
Bachelor's degrees in ZIP 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 18.3% | 36.3% | 28.4% |
| 2010–14 | 14.7% | 37.7% | 29.6% |
| 2015–19 | 13.7% | 40.5% | 32.1% |
| 2020–24 | 27.1% | 43.4% | 35.6% |
| Change | +8.9 pts | +7.1 pts | +7.2 pts |
College degrees are less common in ZIP 21837 than nationally: 27.1% of adults 25 and older have a bachelor's or higher, against 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 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 87.5% | 88.0% | 84.9% |
| 2010–14 | 89.2% | 89.1% | 86.1% |
| 2015–19 | 91.9% | 90.2% | 87.7% |
| 2020–24 | 89.1% | 90.9% | 89.3% |
| Change | +1.6 pts | +2.9 pts | +4.3 pts |
About as many adults in ZIP 21837 have finished high school as nationally: 89.1%, against 89.3%. The rate is lower than in Maryland overall (90.9%).
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 21837
| Period | ZIP 21837 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 3.0% | 6.5% | 8.1% |
| 2010–14 | 7.4% | 8.1% | 9.4% |
| 2015–19 | 7.9% | 5.1% | 5.6% |
| 2020–24 | 4.4% | 5.0% | 5.4% |
| Change | +1.3 pts | −1.5 pts | −2.7 pts |
Jobs have been a little easier to find in ZIP 21837 than nationally: unemployment was 4.4%, against 5.4%. That is in line with the rest of Maryland. 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 21837 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 21837 | 2.70 | 40.7 | 9.0% | 12.9% | 4.2% | 1989 | $1,227 | 27.1% | 89.1% | 4.4% |
| ZIP 21830 | 2.82 | 38.0 | 14.0% | 14.4% | 5.8% | 1991 | $1,372 | 38.8% | 93.8% | 5.1% |
| ZIP 21861 | 2.53 | 37.3 | 19.2% | 15.8% | 9.0% | 1938 | $1,258 | 17.5% | 91.9% | 3.1% |
| ZIP 21869 | 2.57 | 49.0 | 4.7% | 13.2% | 18.1% | 1963 | $1,437 | 13.9% | 86.5% | 5.3% |
| ZIP 21659 | 2.71 | 40.5 | 17.2% | 16.6% | 11.6% | 1986 | $943 | 11.4% | 81.3% | 8.0% |
| ZIP 21856 | 2.47 | 52.2 | 18.3% | 15.4% | 8.2% | 1988 | $1,199 | 23.1% | 91.4% | 14.2% |
| ZIP 21801 | 2.40 | 37.4 | 11.9% | 42.4% | 8.7% | 1978 | $1,246 | 33.6% | 89.4% | 5.7% |
| ZIP 19931 | 2.75 | 42.6 | 0.9% | 5.1% | 9.9% | 1987 | $898 | 14.8% | 89.5% | 0.7% |
| ZIP 21875 | 2.59 | 38.2 | 12.1% | 27.4% | 8.9% | 1988 | $1,442 | 23.2% | 92.2% | 2.2% |
| ZIP 19940 | 3.00 | 45.6 | 9.9% | 15.1% | 9.0% | 1994 | $1,119 | 19.2% | 87.2% | 6.1% |
| ZIP 19956 | 2.62 | 41.6 | 17.6% | 32.0% | 6.9% | 1987 | $1,102 | 15.1% | 87.1% | 6.7% |
All figures 2020–24.
Zip codes with similar populations: 07865, NJ · 12529, NY · 14435, NY · 14755, NY · 15436, PA · 95464, CA · 19383, PA · 20117, VA · 27355, NC · 72365, AR
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 21837. 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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