Population 2,953 · Census ACS 2020–24
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Population and households in ZIP 21813
Household size in ZIP 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.42 | 2.68 | 2.68 |
| 2010–14 | 2.99 | 2.73 | 2.73 |
| 2015–19 | 2.51 | 2.74 | 2.71 |
| 2020–24 | 2.35 | 2.68 | 2.65 |
| Change | −0.08 | +0.01 | −0.03 |
ZIP 21813 is a place of small households, averaging 2.35 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children.
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 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 47.6 | 38.5 | 37.7 |
| 2010–14 | 45.6 | 39.3 | 38.6 |
| 2015–19 | 49.9 | 40.2 | 39.6 |
| 2020–24 | 51.9 | 40.6 | 40.1 |
| Change | +4.4 | +2.1 | +2.3 |
With a median age of 51.9, ZIP 21813 is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. The median age has climbed from 47.6 in 2006–10, but in a place this small, survey estimates can swing a lot from one release to the next.
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 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 4.5% | 12.5% | 12.3% |
| 2010–14 | 11.0% | 12.6% | 12.3% |
| 2015–19 | 5.5% | 11.7% | 11.6% |
| 2020–24 | 5.1% | 11.7% | 11.6% |
| Change | +0.5 pts | −0.9 pts | −0.6 pts |
Single parents head only 5.1% of households in ZIP 21813, 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 21813
Renters in ZIP 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 7.7% | 31.0% | 33.3% |
| 2010–14 | 13.5% | 32.9% | 35.6% |
| 2015–19 | 10.0% | 33.1% | 36.0% |
| 2020–24 | 18.1% | 32.4% | 34.8% |
| Change | +10.4 pts | +1.4 pts | +1.5 pts |
Only 18.1% of households in ZIP 21813 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. About a third of owners (34.2%) have paid off their mortgages, 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 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 20.4% | 9.0% | 11.4% |
| 2010–14 | 35.5% | 8.9% | 11.4% |
| 2015–19 | 27.6% | 8.9% | 11.1% |
| 2020–24 | 15.4% | 7.1% | 9.6% |
| Change | −5.0 pts | −1.9 pts | −1.8 pts |
Vacant homes make up 15.4% of the housing in ZIP 21813, 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 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1985 | 1974 | 1974 |
| 2010–14 | 1988 | 1975 | 1975 |
| 2015–19 | 1981 | 1976 | 1977 |
| 2020–24 | 1992 | 1978 | 1980 |
| Change | +7 | +4 | +6 |
Much of the housing in ZIP 21813 is relatively new: half of its homes were built after 1992, compared with 1980 for the U.S. as a whole.
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 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $760 | $1,249 | $965 |
| 2010–14 | $1,269 | $1,363 | $1,040 |
| 2015–19 | $1,006 | $1,576 | $1,213 |
| 2020–24 | $1,151 | $1,869 | $1,571 |
| Change | +$391 | +$620 | +$606 |
A typical rental in ZIP 21813 costs $1,151 a month with utilities, well below the national median of $1,571. Rent takes 18.9% 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 21813
Bachelor's degrees in ZIP 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 26.0% | 36.3% | 28.4% |
| 2010–14 | 37.5% | 37.7% | 29.6% |
| 2015–19 | 27.1% | 40.5% | 32.1% |
| 2020–24 | 26.5% | 43.4% | 35.6% |
| Change | +0.4 pts | +7.1 pts | +7.2 pts |
Just over a quarter of adults 25 and older in ZIP 21813 (26.5%) have a bachelor's degree or higher, below the national share of 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 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 90.1% | 88.0% | 84.9% |
| 2010–14 | 92.0% | 89.1% | 86.1% |
| 2015–19 | 90.0% | 90.2% | 87.7% |
| 2020–24 | 93.5% | 90.9% | 89.3% |
| Change | +3.4 pts | +2.9 pts | +4.3 pts |
High school completion in ZIP 21813 is above the national rate: 93.5% 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 21813
| Period | ZIP 21813 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.6% | 6.5% | 8.1% |
| 2010–14 | 9.5% | 8.1% | 9.4% |
| 2015–19 | 0.1% | 5.1% | 5.6% |
| 2020–24 | 4.3% | 5.0% | 5.4% |
| Change | +1.7 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 21813 runs below the national rate: 4.3% of the labor force was out of work and looking, against 5.4% nationally. That is in line with the rest of Maryland. 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 21813 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 21813 | 2.35 | 51.9 | 5.1% | 18.1% | 15.4% | 1992 | $1,151 | 26.5% | 93.5% | 4.3% |
| ZIP 21862 | 2.29 | 47.0 | 4.8% | 4.7% | 16.1% | 1991 | $1,125 | 35.4% | 87.6% | 0.0% |
| ZIP 19975 | 2.22 | 58.0 | 6.3% | 10.6% | 31.1% | 2000 | $1,127 | 36.7% | 91.3% | 5.6% |
| ZIP 21811 | 2.29 | 53.6 | 10.5% | 16.9% | 26.8% | 1992 | $1,615 | 40.7% | 94.3% | 5.8% |
| ZIP 21842 | 2.04 | 48.6 | 7.1% | 23.8% | 60.3% | 1988 | $1,432 | 41.2% | 94.3% | 7.4% |
| ZIP 19945 | 2.43 | 54.5 | 7.8% | 13.9% | 25.5% | 1999 | $1,358 | 30.8% | 90.2% | 5.9% |
| ZIP 21872 | 2.22 | 49.1 | 5.6% | 13.9% | 22.0% | 1991 | $1,125 | 36.4% | 87.6% | 0.6% |
| ZIP 19944 | 2.13 | 69.1 | 0.4% | 8.8% | 80.3% | 1986 | $1,386 | 56.2% | 87.9% | 3.2% |
| ZIP 19967 | 1.96 | 66.1 | 2.3% | 6.2% | 35.5% | 2013 | $1,798 | 44.1% | 97.6% | 4.2% |
| ZIP 19970 | 2.11 | 63.3 | 4.4% | 8.1% | 49.4% | 2005 | $1,479 | 48.3% | 95.7% | 2.3% |
| ZIP 19939 | 2.42 | 53.9 | 6.7% | 10.3% | 17.1% | 1997 | $1,636 | 35.3% | 90.3% | 2.5% |
All figures 2020–24.
Zip codes with similar populations: 41010, KY · 04040, ME · 79226, TX · 28137, NC · 29487, SC · 29714, SC · 29856, SC · 73007, OK · 72040, AR · 38463, TN
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 21813. 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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