Population 557 · Census ACS 2020–24
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Population and households in ZIP 21664
Household size in ZIP 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.55 | 2.68 | 2.68 |
| 2010–14 | 2.55 | 2.73 | 2.73 |
| 2015–19 | 2.76 | 2.74 | 2.71 |
| 2020–24 | 3.10 | 2.68 | 2.65 |
| Change | +0.55 | +0.01 | −0.03 |
Households in ZIP 21664 are large by national standards, averaging 3.10 people against 2.65 for the U.S. That usually means more families with children at home. Household size has climbed from 2.55 in 2006–10, 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 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 42.9 | 38.5 | 37.7 |
| 2010–14 | 46.6 | 39.3 | 38.6 |
| 2015–19 | 38.7 | 40.2 | 39.6 |
| 2020–24 | 33.1 | 40.6 | 40.1 |
| Change | −9.8 | +2.1 | +2.3 |
With a median age of just 33.1, ZIP 21664 is far younger than the country as a whole (40.1), a population that tilts toward young families with children.
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 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 17.2% | 12.5% | 12.3% |
| 2010–14 | 10.3% | 12.6% | 12.3% |
| 2015–19 | 15.9% | 11.7% | 11.6% |
| 2020–24 | 22.8% | 11.7% | 11.6% |
| Change | +5.6 pts | −0.9 pts | −0.6 pts |
Single parents head more than one in five households in ZIP 21664 (22.8%), 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 21664
Renters in ZIP 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 17.0% | 31.0% | 33.3% |
| 2010–14 | 13.7% | 32.9% | 35.6% |
| 2015–19 | 20.7% | 33.1% | 36.0% |
| 2020–24 | 29.0% | 32.4% | 34.8% |
| Change | +12.0 pts | +1.4 pts | +1.5 pts |
Most households in ZIP 21664 own their homes; 29.0% rent, a little below the national share of 34.8%. Among homeowners, 37.5% 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 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 17.7% | 9.0% | 11.4% |
| 2010–14 | 14.0% | 8.9% | 11.4% |
| 2015–19 | 25.1% | 8.9% | 11.1% |
| 2020–24 | 7.4% | 7.1% | 9.6% |
| Change | −10.3 pts | −1.9 pts | −1.8 pts |
Vacancy is on the low side in ZIP 21664: 7.4% of homes sit empty, against 9.6% nationally, which points to steady demand for housing. Maryland as a whole looks much the same.
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 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1970 | 1974 | 1974 |
| 2010–14 | 1975 | 1975 | 1975 |
| 2015–19 | 1982 | 1976 | 1977 |
| 2020–24 | 1982 | 1978 | 1980 |
| Change | +12 | +4 | +6 |
The typical home in ZIP 21664 was built around 1982, about the same vintage as the country's housing overall (1980).
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 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $1,258 | $1,249 | $965 |
| 2010–14 | $945 | $1,363 | $1,040 |
| 2015–19 | $1,142 | $1,576 | $1,213 |
| 2020–24 | $1,481 | $1,869 | $1,571 |
| Change | +$223 | +$620 | +$606 |
Rent in ZIP 21664 runs $1,481 a month at the median, utilities included, below the U.S. median of $1,571. Rent takes 34.9% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
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 21664
Bachelor's degrees in ZIP 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 15.2% | 36.3% | 28.4% |
| 2010–14 | 16.9% | 37.7% | 29.6% |
| 2015–19 | 18.3% | 40.5% | 32.1% |
| 2020–24 | 27.1% | 43.4% | 35.6% |
| Change | +11.8 pts | +7.1 pts | +7.2 pts |
College degrees are less common in ZIP 21664 than nationally: 27.1% of adults 25 and older have a bachelor's or higher, against 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 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 84.9% | 88.0% | 84.9% |
| 2010–14 | 85.2% | 89.1% | 86.1% |
| 2015–19 | 86.1% | 90.2% | 87.7% |
| 2020–24 | 95.1% | 90.9% | 89.3% |
| Change | +10.2 pts | +2.9 pts | +4.3 pts |
High school completion is high in ZIP 21664: 95.1% 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 21664
| Period | ZIP 21664 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 12.3% | 6.5% | 8.1% |
| 2010–14 | 6.4% | 8.1% | 9.4% |
| 2015–19 | 5.3% | 5.1% | 5.6% |
| 2020–24 | 4.3% | 5.0% | 5.4% |
| Change | −7.9 pts | −1.5 pts | −2.7 pts |
Jobs have been a little easier to find in ZIP 21664 than nationally: unemployment was 4.3%, against 5.4%. The picture is much the same across Maryland. 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 21664 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 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 21835 | 1.96 | 62.7 | 7.1% | 26.1% | 11.0% | 1980 | $1,020 | 14.2% | 79.9% | 2.4% |
| ZIP 21643 | 2.70 | 41.1 | 8.8% | 17.1% | 10.8% | 1983 | $1,105 | 12.6% | 79.4% | 2.3% |
| ZIP 21673 | 2.28 | 47.4 | 13.7% | 24.8% | 20.9% | 1982 | $1,364 | 35.6% | 94.8% | 5.3% |
| ZIP 21613 | 2.30 | 42.3 | 14.2% | 48.3% | 17.0% | 1970 | $1,140 | 20.8% | 86.3% | 8.5% |
| ZIP 21655 | 2.65 | 42.5 | 11.6% | 18.4% | 7.9% | 1976 | $1,363 | 21.2% | 90.5% | 3.6% |
| ZIP 21659 | 2.71 | 40.5 | 17.2% | 16.6% | 11.6% | 1986 | $943 | 11.4% | 81.3% | 8.0% |
| ZIP 21632 | 2.46 | 41.6 | 17.4% | 34.6% | 11.0% | 1974 | $1,033 | 14.4% | 83.8% | 5.0% |
| ZIP 21654 | 1.89 | 65.2 | 8.3% | 13.7% | 30.8% | 1975 | $1,915 | 61.8% | 95.5% | 10.5% |
| ZIP 21861 | 2.53 | 37.3 | 19.2% | 15.8% | 9.0% | 1938 | $1,258 | 17.5% | 91.9% | 3.1% |
All figures 2020–24.
Zip codes with similar populations: 65614, MO · 15455, PA · 15640, PA · 98619, WA · 98552, WA · 16683, PA · 98050, WA · 97493, OR · 92341, CA · 03765, NH
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 21664. 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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