Population 8,239 · Census ACS 2020–24
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Population and households in ZIP 21875
Household size in ZIP 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.77 | 2.68 | 2.68 |
| 2010–14 | 2.68 | 2.73 | 2.73 |
| 2015–19 | 2.52 | 2.74 | 2.71 |
| 2020–24 | 2.59 | 2.68 | 2.65 |
| Change | −0.18 | +0.01 | −0.03 |
Households in ZIP 21875 average 2.59 people, about the same as the country as a whole (2.65). The typical household here is smaller than in Maryland as a whole, where it has 2.68 people. Since 2006–10, household size has dropped from 2.77, a much bigger shift than nationally.
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 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 38.2 | 38.5 | 37.7 |
| 2010–14 | 38.8 | 39.3 | 38.6 |
| 2015–19 | 43.8 | 40.2 | 39.6 |
| 2020–24 | 38.2 | 40.6 | 40.1 |
| Change | +0.0 | +2.1 | +2.3 |
ZIP 21875 is a little younger than the country as a whole: its median age is 38.2, against 40.1 nationally. The youngest areas are in the southeast, the oldest in the north.
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 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 10.3% | 12.5% | 12.3% |
| 2010–14 | 15.3% | 12.6% | 12.3% |
| 2015–19 | 12.9% | 11.7% | 11.6% |
| 2020–24 | 12.1% | 11.7% | 11.6% |
| Change | +1.8 pts | −0.9 pts | −0.6 pts |
Single parents head about one in eight households in ZIP 21875 (12.1%), close to the national share of 11.6%. The single-parent share is up 1.8 points from 2006–10, even as the national share fell.
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 21875
Renters in ZIP 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 35.2% | 31.0% | 33.3% |
| 2010–14 | 34.3% | 32.9% | 35.6% |
| 2015–19 | 32.3% | 33.1% | 36.0% |
| 2020–24 | 27.4% | 32.4% | 34.8% |
| Change | −7.8 pts | +1.4 pts | +1.5 pts |
More than a quarter of households in ZIP 21875 rent their homes (27.4%), below the national share of 34.8%; the rest own. Among homeowners, 35.1% have no mortgage at all, below the national share of 39.8%. Rentals cluster in the southeast; owners are most common in the northeast. Since 2006–10, the renter share has fallen 7.8 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 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 10.0% | 9.0% | 11.4% |
| 2010–14 | 10.4% | 8.9% | 11.4% |
| 2015–19 | 15.1% | 8.9% | 11.1% |
| 2020–24 | 8.9% | 7.1% | 9.6% |
| Change | −1.2 pts | −1.9 pts | −1.8 pts |
About as many homes sit empty in ZIP 21875 as nationally: 8.9%, against 9.6%. The rate is higher than in Maryland as a whole (7.1%). Vacancy has edged down 1.2 points since 2006–10, in line with the national trend.
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 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1985 | 1974 | 1974 |
| 2010–14 | 1985 | 1975 | 1975 |
| 2015–19 | 1972 | 1976 | 1977 |
| 2020–24 | 1988 | 1978 | 1980 |
| Change | +4 | +4 | +6 |
Much of the housing in ZIP 21875 is relatively new: half of its homes were built after 1988, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1985 in 2006–10, a sign of steady new building. The newest homes are mostly in the south, the oldest in the north.
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 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $843 | $1,249 | $965 |
| 2010–14 | $1,044 | $1,363 | $1,040 |
| 2015–19 | $1,099 | $1,576 | $1,213 |
| 2020–24 | $1,442 | $1,869 | $1,571 |
| Change | +$599 | +$620 | +$606 |
A typical rental in ZIP 21875 costs $1,442 a month with utilities, below the national median of $1,571. Rent has climbed $599 a month since 2006–10, up 71%, faster than rents rose nationally. The typical renter here spends 28.0% of household income on rent, just under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Renters on a budget will find the lowest rents in the north; the highest are in the south.
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 21875
Bachelor's degrees in ZIP 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 23.3% | 36.3% | 28.4% |
| 2010–14 | 19.9% | 37.7% | 29.6% |
| 2015–19 | 24.1% | 40.5% | 32.1% |
| 2020–24 | 23.2% | 43.4% | 35.6% |
| Change | −0.2 pts | +7.1 pts | +7.2 pts |
Fewer adults in ZIP 21875 have a four-year degree than in the country as a whole: 23.2%, against 35.6% nationally. Only 23 of the 240 Maryland ZIP codes with 5,000+ people have a lower 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 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 83.9% | 88.0% | 84.9% |
| 2010–14 | 87.9% | 89.1% | 86.1% |
| 2015–19 | 83.4% | 90.2% | 87.7% |
| 2020–24 | 92.2% | 90.9% | 89.3% |
| Change | +8.3 pts | +2.9 pts | +4.3 pts |
About nine in ten adults in ZIP 21875 have finished high school (92.2%), a bit above the national rate of 89.3%. That is in line with the rest of Maryland. Since 2006–10, the share with a diploma has risen 8.3 points, 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 21875
| Period | ZIP 21875 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 9.2% | 6.5% | 8.1% |
| 2010–14 | 10.5% | 8.1% | 9.4% |
| 2015–19 | 10.5% | 5.1% | 5.6% |
| 2020–24 | 2.2% | 5.0% | 5.4% |
| Change | −7.1 pts | −1.5 pts | −2.7 pts |
The job market in ZIP 21875 has been strong: just 2.2% of the labor force was out of work and looking, well below the national rate of 5.4%. Of the 240 Maryland ZIP codes with 5,000+ people, only 20 have lower unemployment. Unemployment is down 7.1 points from 2006–10, mirroring the country.
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 21875 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 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 21804 | 2.54 | 35.7 | 13.2% | 50.0% | 8.7% | 1983 | $1,422 | 27.0% | 90.3% | 7.1% |
| ZIP 21801 | 2.40 | 37.4 | 11.9% | 42.4% | 8.7% | 1978 | $1,246 | 33.6% | 89.4% | 5.7% |
| ZIP 21849 | 2.50 | 39.5 | 14.3% | 20.5% | 6.6% | 1978 | $1,368 | 23.8% | 90.6% | 2.3% |
| ZIP 21802 | 2.27 | 21.3 | 7.2% | 89.9% | 8.2% | 1995 | $1,087 | 22.0% | 93.8% | 17.0% |
| ZIP 21830 | 2.82 | 38.0 | 14.0% | 14.4% | 5.8% | 1991 | $1,372 | 38.8% | 93.8% | 5.1% |
| ZIP 19956 | 2.62 | 41.6 | 17.6% | 32.0% | 6.9% | 1987 | $1,102 | 15.1% | 87.1% | 6.7% |
| ZIP 21826 | 3.11 | 31.1 | 11.0% | 27.7% | 10.7% | 1980 | $1,455 | 36.1% | 90.2% | 4.0% |
| ZIP 21850 | 2.35 | 43.9 | 16.6% | 10.6% | 8.3% | 1995 | $1,106 | 16.1% | 89.8% | 3.5% |
| ZIP 19931 | 2.75 | 42.6 | 0.9% | 5.1% | 9.9% | 1987 | $898 | 14.8% | 89.5% | 0.7% |
All figures 2020–24.
Zip codes with similar populations: 72476, AR · 46167, IN · 46737, IN · 48883, MI · 49649, MI · 49913, MI · 50511, IA · 53050, WI · 55616, MN · 62207, IL
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 21875. 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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