Population 1,133 · Census ACS 2020–24
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Population and households in ZIP 21912
Household size in ZIP 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.48 | 2.64 | 2.68 | 2.68 |
| 2010–14 | 2.85 | 2.68 | 2.73 | 2.73 |
| 2015–19 | 2.59 | 2.65 | 2.74 | 2.71 |
| 2020–24 | 2.08 | 2.57 | 2.68 | 2.65 |
| Change | −0.41 | −0.07 | +0.01 | −0.03 |
Households in ZIP 21912 are small: just 2.08 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Household size has dropped from 2.48 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 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 40.2 | 38.5 | 38.5 | 37.7 |
| 2010–14 | 38.0 | 39.3 | 39.3 | 38.6 |
| 2015–19 | 45.8 | 40.3 | 40.2 | 39.6 |
| 2020–24 | 51.0 | 40.4 | 40.6 | 40.1 |
| Change | +10.9 | +1.9 | +2.1 | +2.3 |
ZIP 21912 skews older: half of its residents are older than 51.0, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.
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 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.4% | 12.2% | 12.5% | 12.3% |
| 2010–14 | 9.9% | 11.8% | 12.6% | 12.3% |
| 2015–19 | 5.9% | 11.7% | 11.7% | 11.6% |
| 2020–24 | 5.5% | 12.1% | 11.7% | 11.6% |
| Change | −4.9 pts | −0.1 pts | −0.9 pts | −0.6 pts |
Single parents head only 5.5% of households in ZIP 21912, well 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 21912
Renters in ZIP 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 26.9% | 30.2% | 31.0% | 33.3% |
| 2010–14 | 25.2% | 32.1% | 32.9% | 35.6% |
| 2015–19 | 39.7% | 32.7% | 33.1% | 36.0% |
| 2020–24 | 21.7% | 33.2% | 32.4% | 34.8% |
| Change | −5.2 pts | +3.0 pts | +1.4 pts | +1.5 pts |
ZIP 21912 is largely a place of homeowners: only 21.7% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 40.8% 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 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 13.2% | 9.1% | 9.0% | 11.4% |
| 2010–14 | 21.1% | 9.2% | 8.9% | 11.4% |
| 2015–19 | 2.9% | 9.0% | 8.9% | 11.1% |
| 2020–24 | 7.3% | 6.9% | 7.1% | 9.6% |
| Change | −5.8 pts | −2.2 pts | −1.9 pts | −1.8 pts |
Vacancy is on the low side in ZIP 21912: 7.3% of homes sit empty, against 9.6% nationally, which points to steady demand for housing. That is in line with the rest of the Philadelphia area.
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 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1971 | 1964 | 1974 | 1974 |
| 2010–14 | 1972 | 1965 | 1975 | 1975 |
| 2015–19 | 1979 | 1965 | 1976 | 1977 |
| 2020–24 | 1977 | 1968 | 1978 | 1980 |
| Change | +5 | +4 | +4 | +6 |
Homes in ZIP 21912 are about the same age as the nation's housing: the median home was built in 1977, versus 1980 nationally. Homes here are newer than in the wider Philadelphia area, where the median home dates to 1968.
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 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $840 | $1,049 | $1,249 | $965 |
| 2010–14 | $957 | $1,147 | $1,363 | $1,040 |
| 2015–19 | $863 | $1,281 | $1,576 | $1,213 |
| 2020–24 | $1,024 | $1,631 | $1,869 | $1,571 |
| Change | +$184 | +$582 | +$620 | +$606 |
The median renter in ZIP 21912 pays $1,024 a month for rent and utilities, well below the national median of $1,571. Rent takes 30.3% of the typical renter's income, just over the 30% mark often used to define affordable rent.
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 21912
Bachelor's degrees in ZIP 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 20.0% | 32.7% | 36.3% | 28.4% |
| 2010–14 | 12.9% | 34.4% | 37.7% | 29.6% |
| 2015–19 | 19.5% | 37.9% | 40.5% | 32.1% |
| 2020–24 | 33.8% | 42.3% | 43.4% | 35.6% |
| Change | +13.8 pts | +9.6 pts | +7.1 pts | +7.2 pts |
About a third of adults 25 and older in ZIP 21912 (33.8%) hold at least a bachelor's degree, close to the national share of 35.6%. The share is lower than in the wider Philadelphia area (42.3%).
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 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 91.0% | 87.5% | 88.0% | 84.9% |
| 2010–14 | 92.0% | 88.9% | 89.1% | 86.1% |
| 2015–19 | 82.1% | 90.5% | 90.2% | 87.7% |
| 2020–24 | 94.6% | 91.9% | 90.9% | 89.3% |
| Change | +3.6 pts | +4.4 pts | +2.9 pts | +4.3 pts |
High school completion is high in ZIP 21912: 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 21912
| Period | ZIP 21912 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.8% | 8.4% | 6.5% | 8.1% |
| 2010–14 | 7.0% | 10.2% | 8.1% | 9.4% |
| 2015–19 | 4.2% | 6.3% | 5.1% | 5.6% |
| 2020–24 | 3.1% | 6.1% | 5.0% | 5.4% |
| Change | −3.7 pts | −2.3 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 21912 has been low: just 3.1% of the labor force was out of work and looking, well below the national rate of 5.4%. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current 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 21912 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 21912 | 2.08 | 51.0 | 5.5% | 21.7% | 7.3% | 1977 | $1,024 | 33.8% | 94.6% | 3.1% |
| ZIP 21913 | 2.08 | 48.3 | 6.3% | 21.1% | 5.3% | 1975 | $1,095 | 39.7% | 93.4% | 2.4% |
| ZIP 21635 | 2.15 | 51.2 | 7.1% | 18.0% | 22.4% | 1979 | $1,283 | 38.0% | 86.0% | 3.3% |
| ZIP 21930 | 2.71 | 44.4 | 3.8% | 6.5% | 36.4% | 1975 | $1,500 | 43.7% | 93.8% | 10.8% |
| ZIP 21915 | 2.16 | 54.1 | 8.6% | 20.0% | 19.7% | 1982 | $958 | 18.6% | 94.3% | 6.2% |
| ZIP 19709 | 2.91 | 41.4 | 14.3% | 13.9% | 2.2% | 2003 | $1,651 | 47.4% | 96.7% | 5.5% |
| ZIP 19734 | 3.09 | 38.6 | 11.4% | 7.0% | 4.9% | 2002 | $1,727 | 33.7% | 94.3% | 2.9% |
| ZIP 21919 | 2.51 | 46.1 | 7.7% | 11.1% | 32.0% | 1980 | $1,578 | 29.9% | 92.4% | 8.5% |
| ZIP 19730 | 2.94 | 41.4 | 1.7% | 20.1% | 17.6% | 1990 | $950 | 47.3% | 97.0% | 0.5% |
| ZIP 21650 | 2.48 | 44.5 | 15.8% | 29.1% | 13.5% | 1978 | $1,246 | 15.9% | 82.2% | 4.3% |
| ZIP 21645 | 2.20 | 53.0 | 7.5% | 20.2% | 24.4% | 1972 | $1,379 | 32.0% | 99.4% | 5.4% |
All figures 2020–24.
Zip codes with similar populations: 52144, IA · 66411, KS · 65567, MO · 63939, MO · 63620, MO · 62979, IL · 61038, IL · 56534, MN · 53937, WI · 53930, WI
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 21912. 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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