Population 5,611 · Census ACS 2020–24
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Population and households in ZIP 21643
Household size in ZIP 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.72 | 2.68 | 2.68 |
| 2010–14 | 2.60 | 2.73 | 2.73 |
| 2015–19 | 2.52 | 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 21643 sits close to the national average of 2.65. Household size is little changed from 2006–10, while the national average fell.
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 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 39.2 | 38.5 | 37.7 |
| 2010–14 | 42.9 | 39.3 | 38.6 |
| 2015–19 | 43.8 | 40.2 | 39.6 |
| 2020–24 | 41.1 | 40.6 | 40.1 |
| Change | +1.9 | +2.1 | +2.3 |
At 41.1, the median age in ZIP 21643 is close to the national median of 40.1, so its age mix looks much like the country's. The median age has climbed from 39.2 in 2006–10, as it has nationally.
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 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 15.1% | 12.5% | 12.3% |
| 2010–14 | 13.6% | 12.6% | 12.3% |
| 2015–19 | 14.8% | 11.7% | 11.6% |
| 2020–24 | 8.8% | 11.7% | 11.6% |
| Change | −6.3 pts | −0.9 pts | −0.6 pts |
Single parents head about one in twelve households in ZIP 21643 (8.8%), below the national share of 11.6%. The single-parent share is down 6.3 points from 2006–10, 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 21643
Renters in ZIP 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 17.6% | 31.0% | 33.3% |
| 2010–14 | 22.0% | 32.9% | 35.6% |
| 2015–19 | 19.4% | 33.1% | 36.0% |
| 2020–24 | 17.1% | 32.4% | 34.8% |
| Change | −0.5 pts | +1.4 pts | +1.5 pts |
ZIP 21643 is largely a place of homeowners: only 17.1% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. About a third of owners (33.3%) have paid off their mortgages, below the national share of 39.8%. Rentals cluster in the southeast; owners are most common in the west.
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 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 15.8% | 9.0% | 11.4% |
| 2010–14 | 17.8% | 8.9% | 11.4% |
| 2015–19 | 10.0% | 8.9% | 11.1% |
| 2020–24 | 10.8% | 7.1% | 9.6% |
| Change | −5.1 pts | −1.9 pts | −1.8 pts |
Vacancy in ZIP 21643 is close to the national rate: 10.8% of homes are empty, against 9.6%. The rate is higher than in Maryland overall (7.1%). Vacancy has fallen 5.1 points since 2006–10, mirroring the country.
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 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1982 | 1974 | 1974 |
| 2010–14 | 1987 | 1975 | 1975 |
| 2015–19 | 1985 | 1976 | 1977 |
| 2020–24 | 1983 | 1978 | 1980 |
| Change | +1 | +4 | +6 |
Homes in ZIP 21643 are about the same age as the nation's housing: the median home was built in 1983, versus 1980 nationally. Homes here are newer than in Maryland overall, where the median home dates to 1978.
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 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $1,012 | $1,249 | $965 |
| 2010–14 | $1,019 | $1,363 | $1,040 |
| 2015–19 | $778 | $1,576 | $1,213 |
| 2020–24 | $1,105 | $1,869 | $1,571 |
| Change | +$93 | +$620 | +$606 |
The median renter in ZIP 21643 pays $1,105 a month for rent and utilities, well below the national median of $1,571. Rents are up $93 a month from 2006–10, a 9% rise, a slower climb than the nation's. The typical renter here spends 40.4% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched. Rents run highest in the center and lowest in the southeast.
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 21643
Bachelor's degrees in ZIP 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 13.2% | 36.3% | 28.4% |
| 2010–14 | 11.5% | 37.7% | 29.6% |
| 2015–19 | 15.4% | 40.5% | 32.1% |
| 2020–24 | 12.6% | 43.4% | 35.6% |
| Change | −0.7 pts | +7.1 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 21643: 12.6% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. The share with a degree has edged down 0.7 points since 2006–10, even as the national share rose. Only one other Maryland ZIP code with 5,000+ people has 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 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 78.1% | 88.0% | 84.9% |
| 2010–14 | 78.9% | 89.1% | 86.1% |
| 2015–19 | 84.4% | 90.2% | 87.7% |
| 2020–24 | 79.4% | 90.9% | 89.3% |
| Change | +1.4 pts | +2.9 pts | +4.3 pts |
About one in five adults in ZIP 21643 never finished high school, well above the national share: only 79.4% have a diploma or equivalent, against 89.3% nationally. The share with a diploma is up 1.4 points from 2006–10, a smaller shift than nationally. Only 12 of the 240 Maryland ZIP codes with 5,000+ people have a lower share of high school graduates.
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 21643
| Period | ZIP 21643 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 13.7% | 6.5% | 8.1% |
| 2010–14 | 10.8% | 8.1% | 9.4% |
| 2015–19 | 7.1% | 5.1% | 5.6% |
| 2020–24 | 2.3% | 5.0% | 5.4% |
| Change | −11.3 pts | −1.5 pts | −2.7 pts |
The job market in ZIP 21643 has been strong: just 2.3% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 11.3 points, a much bigger shift than nationally. 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 21643 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 21643 | 2.70 | 41.1 | 8.8% | 17.1% | 10.8% | 1983 | $1,105 | 12.6% | 79.4% | 2.3% |
| ZIP 21664 | 3.10 | 33.1 | 22.8% | 29.0% | 7.4% | 1982 | $1,481 | 27.1% | 95.1% | 4.3% |
| ZIP 21631 | 2.49 | 50.1 | 10.5% | 18.3% | 7.8% | 1983 | $1,198 | 20.6% | 90.3% | 6.8% |
| ZIP 21632 | 2.46 | 41.6 | 17.4% | 34.6% | 11.0% | 1974 | $1,033 | 14.4% | 83.8% | 5.0% |
| ZIP 21659 | 2.71 | 40.5 | 17.2% | 16.6% | 11.6% | 1986 | $943 | 11.4% | 81.3% | 8.0% |
| ZIP 21655 | 2.65 | 42.5 | 11.6% | 18.4% | 7.9% | 1976 | $1,363 | 21.2% | 90.5% | 3.6% |
| ZIP 21835 | 1.96 | 62.7 | 7.1% | 26.1% | 11.0% | 1980 | $1,020 | 14.2% | 79.9% | 2.4% |
| ZIP 21673 | 2.28 | 47.4 | 13.7% | 24.8% | 20.9% | 1982 | $1,364 | 35.6% | 94.8% | 5.3% |
| ZIP 21861 | 2.53 | 37.3 | 19.2% | 15.8% | 9.0% | 1938 | $1,258 | 17.5% | 91.9% | 3.1% |
| ZIP 21613 | 2.30 | 42.3 | 14.2% | 48.3% | 17.0% | 1970 | $1,140 | 20.8% | 86.3% | 8.5% |
| 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: 83530, ID · 02817, RI · 16915, PA · 02642, MA · 75948, TX · 13309, NY · 95969, CA · 35466, AL · 64865, MO · 35147, AL
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 21643. 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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