Population 4,094 · Census ACS 2020–24
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Population and households in ZIP 21756
Household size in ZIP 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.96 | 2.68 | 2.68 |
| 2010–14 | 2.72 | 2.73 | 2.73 |
| 2015–19 | 2.88 | 2.74 | 2.71 |
| 2020–24 | 2.83 | 2.68 | 2.65 |
| Change | −0.13 | +0.01 | −0.03 |
The typical household in ZIP 21756 holds 2.83 people, more than the U.S. average of 2.65. Household size has dropped from 2.96 in 2006–10, but in a place this small, survey estimates can swing a lot from one release to the next.
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 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 36.7 | 38.5 | 37.7 |
| 2010–14 | 40.8 | 39.3 | 38.6 |
| 2015–19 | 40.2 | 40.2 | 39.6 |
| 2020–24 | 42.0 | 40.6 | 40.1 |
| Change | +5.4 | +2.1 | +2.3 |
The median resident of ZIP 21756 is 42.0 years old, a bit older than the national median of 40.1. That is in line with the rest of Maryland.
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 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 5.9% | 12.5% | 12.3% |
| 2010–14 | 8.6% | 12.6% | 12.3% |
| 2015–19 | 6.2% | 11.7% | 11.6% |
| 2020–24 | 15.1% | 11.7% | 11.6% |
| Change | +9.2 pts | −0.9 pts | −0.6 pts |
Single parents head just over one in seven households in ZIP 21756 (15.1%), well above 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 21756
Renters in ZIP 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 14.8% | 31.0% | 33.3% |
| 2010–14 | 11.5% | 32.9% | 35.6% |
| 2015–19 | 10.0% | 33.1% | 36.0% |
| 2020–24 | 7.8% | 32.4% | 34.8% |
| Change | −7.0 pts | +1.4 pts | +1.5 pts |
Only 7.8% of households in ZIP 21756 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. About four in ten owners (39.8%) have paid off their mortgages, 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 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 4.2% | 9.0% | 11.4% |
| 2010–14 | 6.9% | 8.9% | 11.4% |
| 2015–19 | 3.9% | 8.9% | 11.1% |
| 2020–24 | 4.3% | 7.1% | 9.6% |
| Change | +0.0 pts | −1.9 pts | −1.8 pts |
Only 4.3% of homes in ZIP 21756 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 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1985 | 1974 | 1974 |
| 2010–14 | 1989 | 1975 | 1975 |
| 2015–19 | 1993 | 1976 | 1977 |
| 2020–24 | 1991 | 1978 | 1980 |
| Change | +6 | +4 | +6 |
ZIP 21756 has newer housing than the country as a whole: the median home was built in 1991, 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 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $762 | $1,249 | $965 |
| 2010–14 | $931 | $1,363 | $1,040 |
| 2015–19 | $1,616 | $1,576 | $1,213 |
| 2020–24 | $1,450 | $1,869 | $1,571 |
| Change | +$688 | +$620 | +$606 |
A typical rental in ZIP 21756 costs $1,450 a month with utilities, below the national median of $1,571. The typical renter here spends 25.8% of household income on rent, comfortably 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 21756
Bachelor's degrees in ZIP 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 28.9% | 36.3% | 28.4% |
| 2010–14 | 29.1% | 37.7% | 29.6% |
| 2015–19 | 29.5% | 40.5% | 32.1% |
| 2020–24 | 31.7% | 43.4% | 35.6% |
| Change | +2.8 pts | +7.1 pts | +7.2 pts |
Nearly a third of adults 25 and older in ZIP 21756 (31.7%) have a bachelor's degree or higher, a little below 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 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 89.4% | 88.0% | 84.9% |
| 2010–14 | 88.7% | 89.1% | 86.1% |
| 2015–19 | 93.5% | 90.2% | 87.7% |
| 2020–24 | 94.6% | 90.9% | 89.3% |
| Change | +5.1 pts | +2.9 pts | +4.3 pts |
High school completion is high in ZIP 21756: 94.6% of adults 25 and older have a diploma or equivalent, well above the national rate of 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 21756
| Period | ZIP 21756 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 5.9% | 6.5% | 8.1% |
| 2010–14 | 7.1% | 8.1% | 9.4% |
| 2015–19 | 2.3% | 5.1% | 5.6% |
| 2020–24 | 4.1% | 5.0% | 5.4% |
| Change | −1.8 pts | −1.5 pts | −2.7 pts |
Jobs have been a little easier to find in ZIP 21756 than nationally: unemployment was 4.1%, against 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 21756 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 21756 | 2.83 | 42.0 | 15.1% | 7.8% | 4.3% | 1991 | $1,450 | 31.7% | 94.6% | 4.1% |
| ZIP 21782 | 2.45 | 48.6 | 8.9% | 11.6% | 9.8% | 1979 | $1,191 | 26.4% | 93.2% | 9.4% |
| ZIP 21779 | 2.52 | 42.0 | 8.9% | 24.6% | 7.8% | 1973 | $1,379 | 38.9% | 91.4% | 3.7% |
| ZIP 21713 | 2.58 | 45.8 | 9.8% | 17.1% | 3.7% | 1981 | $1,208 | 29.3% | 93.4% | 2.0% |
| ZIP 21718 | 2.72 | 55.8 | 6.1% | 13.2% | 11.8% | 1974 | $2,351 | 41.7% | 97.0% | 12.3% |
| ZIP 25443 | 2.58 | 39.0 | 10.8% | 15.3% | 7.2% | 1989 | $1,197 | 52.6% | 94.1% | 4.3% |
| ZIP 21733 | 2.88 | 39.9 | 5.1% | 15.9% | 6.9% | 1987 | $1,237 | 25.7% | 93.3% | 1.3% |
| ZIP 21746 | 2.48 | 37.3 | 12.6% | 33.2% | 6.7% | 1974 | $1,147 | 2.3% | 70.6% | 4.2% |
| ZIP 21781 | 2.69 | 43.3 | 14.6% | 19.3% | 4.5% | 2002 | $1,370 | 23.6% | 90.4% | 3.0% |
| ZIP 21769 | 2.94 | 45.2 | 7.7% | 12.0% | 5.5% | 1984 | $1,982 | 48.1% | 97.1% | 3.1% |
| ZIP 21773 | 2.89 | 46.9 | 3.9% | 6.9% | 9.2% | 1984 | $1,636 | 47.7% | 96.5% | 3.7% |
All figures 2020–24.
Zip codes with similar populations: 95546, CA · 98631, WA · 02576, MA · 08327, NJ · 78383, TX · 74058, OK · 64070, MO · 54738, WI · 55604, MN · 59859, MT
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 21756. 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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