Population 82 · Census ACS 2020–24
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Population and households in ZIP 21930
Household size in ZIP 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.53 | 2.64 | 2.68 | 2.68 |
| 2010–14 | 2.58 | 2.68 | 2.73 | 2.73 |
| 2015–19 | 2.40 | 2.65 | 2.74 | 2.71 |
| 2020–24 | 2.71 | 2.57 | 2.68 | 2.65 |
| Change | +0.18 | −0.07 | +0.01 | −0.03 |
Households in ZIP 21930 average 2.71 people, about the same as the country as a whole (2.65). The typical household here is bigger than in the wider Philadelphia area, where it has 2.57 people. Since 2006–10, household size has climbed from 2.53, but in a place this small, much of that may be survey noise rather than real change.
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 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 50.1 | 38.5 | 38.5 | 37.7 |
| 2010–14 | 46.4 | 39.3 | 39.3 | 38.6 |
| 2015–19 | 60.5 | 40.3 | 40.2 | 39.6 |
| 2020–24 | 44.4 | 40.4 | 40.6 | 40.1 |
| Change | −5.7 | +1.9 | +2.1 | +2.3 |
With a median age of 44.4, ZIP 21930 is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
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 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.1% | 12.2% | 12.5% | 12.3% |
| 2010–14 | 6.4% | 11.8% | 12.6% | 12.3% |
| 2015–19 | 2.1% | 11.7% | 11.7% | 11.6% |
| 2020–24 | 3.8% | 12.1% | 11.7% | 11.6% |
| Change | −0.3 pts | −0.1 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 21930: 3.8% of households, against 11.6% 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 21930
Renters in ZIP 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.0% | 30.2% | 31.0% | 33.3% |
| 2010–14 | 16.9% | 32.1% | 32.9% | 35.6% |
| 2015–19 | 13.0% | 32.7% | 33.1% | 36.0% |
| 2020–24 | 6.5% | 33.2% | 32.4% | 34.8% |
| Change | −3.5 pts | +3.0 pts | +1.4 pts | +1.5 pts |
ZIP 21930 is overwhelmingly a place of homeowners: only 6.5% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 34.0% have no mortgage at all, below the national share of 39.8%.
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 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 37.9% | 9.1% | 9.0% | 11.4% |
| 2010–14 | 43.8% | 9.2% | 8.9% | 11.4% |
| 2015–19 | 49.0% | 9.0% | 8.9% | 11.1% |
| 2020–24 | 36.4% | 6.9% | 7.1% | 9.6% |
| Change | −1.5 pts | −2.2 pts | −1.9 pts | −1.8 pts |
Vacancy is high in ZIP 21930: 36.4% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
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 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1979 | 1964 | 1974 | 1974 |
| 2010–14 | 1970 | 1965 | 1975 | 1975 |
| 2015–19 | 1977 | 1965 | 1976 | 1977 |
| 2020–24 | 1975 | 1968 | 1978 | 1980 |
| Change | −4 | +4 | +4 | +6 |
Housing in ZIP 21930 leans a little older: the median home dates to 1975, against 1980 nationally. Still, 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 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $988 | $1,049 | $1,249 | $965 |
| 2010–14 | $1,270 | $1,147 | $1,363 | $1,040 |
| 2015–19 | $1,197 | $1,281 | $1,576 | $1,213 |
| 2020–24 | $1,500 | $1,631 | $1,869 | $1,571 |
| Change | +$512 | +$582 | +$620 | +$606 |
A typical rental in ZIP 21930 costs $1,500 a month with utilities, close to the national median of $1,571. Rents here are lower than in the Philadelphia area as a whole ($1,631). Rent takes 24.7% of the typical renter's income, comfortably under 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 21930
Bachelor's degrees in ZIP 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.2% | 32.7% | 36.3% | 28.4% |
| 2010–14 | 13.0% | 34.4% | 37.7% | 29.6% |
| 2015–19 | 33.1% | 37.9% | 40.5% | 32.1% |
| 2020–24 | 43.7% | 42.3% | 43.4% | 35.6% |
| Change | +33.4 pts | +9.6 pts | +7.1 pts | +7.2 pts |
College degrees are more common in ZIP 21930 than nationally: 43.7% of adults 25 and older have a bachelor's or higher, against 35.6%. The picture is much the same across the Philadelphia area.
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 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 88.4% | 87.5% | 88.0% | 84.9% |
| 2010–14 | 82.8% | 88.9% | 89.1% | 86.1% |
| 2015–19 | 98.1% | 90.5% | 90.2% | 87.7% |
| 2020–24 | 93.8% | 91.9% | 90.9% | 89.3% |
| Change | +5.4 pts | +4.4 pts | +2.9 pts | +4.3 pts |
High school completion in ZIP 21930 is above the national rate: 93.8% of adults have a diploma or equivalent, against 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 21930
| Period | ZIP 21930 | Philadelphia area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.7% | 8.4% | 6.5% | 8.1% |
| 2010–14 | 2.8% | 10.2% | 8.1% | 9.4% |
| 2015–19 | 3.7% | 6.3% | 5.1% | 5.6% |
| 2020–24 | 10.8% | 6.1% | 5.0% | 5.4% |
| Change | +3.1 pts | −2.3 pts | −1.5 pts | −2.7 pts |
Finding work has been harder in ZIP 21930: 10.8% of the labor force was out of work and looking, well above the national rate of 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 21930 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 21930 | 2.71 | 44.4 | 3.8% | 6.5% | 36.4% | 1975 | $1,500 | 43.7% | 93.8% | 10.8% |
| ZIP 21635 | 2.15 | 51.2 | 7.1% | 18.0% | 22.4% | 1979 | $1,283 | 38.0% | 86.0% | 3.3% |
| ZIP 21913 | 2.08 | 48.3 | 6.3% | 21.1% | 5.3% | 1975 | $1,095 | 39.7% | 93.4% | 2.4% |
| ZIP 21919 | 2.51 | 46.1 | 7.7% | 11.1% | 32.0% | 1980 | $1,578 | 29.9% | 92.4% | 8.5% |
| ZIP 21645 | 2.20 | 53.0 | 7.5% | 20.2% | 24.4% | 1972 | $1,379 | 32.0% | 99.4% | 5.4% |
| ZIP 21650 | 2.48 | 44.5 | 15.8% | 29.1% | 13.5% | 1978 | $1,246 | 15.9% | 82.2% | 4.3% |
| ZIP 21912 | 2.08 | 51.0 | 5.5% | 21.7% | 7.3% | 1977 | $1,024 | 33.8% | 94.6% | 3.1% |
| ZIP 21651 | 2.66 | 37.5 | 22.0% | 21.6% | 13.8% | 1988 | $1,540 | 17.2% | 89.6% | 5.9% |
| ZIP 21667 | 2.10 | 57.2 | 7.2% | 14.1% | 26.8% | 1962 | $1,613 | 37.8% | 98.9% | 6.1% |
| ZIP 21628 | 2.43 | 41.4 | 20.8% | 7.5% | 16.7% | 1994 | $1,889 | 20.6% | 90.2% | 11.3% |
| ZIP 21610 | 2.33 | 50.0 | 1.1% | 14.4% | 30.4% | 1973 | $2,033 | 34.7% | 95.6% | 3.6% |
All figures 2020–24.
Zip codes with similar populations: 37733, TN · 79537, TX · 79754, TX · 79759, TX · 79785, TX · 80488, CO · 81330, CO · 82219, WY · 82332, WY · 40849, KY
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 21930. 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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