Population 102 · Census ACS 2020–24
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Population and households in ZIP 21675
Household size in ZIP 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.32 | 2.68 | 2.68 |
| 2010–14 | 1.88 | 2.73 | 2.73 |
| 2015–19 | 1.88 | 2.74 | 2.71 |
| 2020–24 | 2.29 | 2.68 | 2.65 |
| Change | −0.03 | +0.01 | −0.03 |
Households in ZIP 21675 are small: just 2.29 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: 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 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 46.8 | 38.5 | 37.7 |
| 2010–14 | 55.6 | 39.3 | 38.6 |
| 2015–19 | 53.5 | 40.2 | 39.6 |
| 2020–24 | 57.8 | 40.6 | 40.1 |
| Change | +11.0 | +2.1 | +2.3 |
ZIP 21675 skews older: half of its residents are older than 57.8, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. Since 2006–10, the median age has climbed from 46.8, but in a place this small, much of that may be survey noise rather than real change.
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 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 15.6% | 12.5% | 12.3% |
| 2010–14 | 13.5% | 12.6% | 12.3% |
| 2015–19 | 8.7% | 11.7% | 11.6% |
| 2020–24 | 2.0% | 11.7% | 11.6% |
| Change | −13.6 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 21675: 2.0% 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 21675
Renters in ZIP 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 10.8% | 31.0% | 33.3% |
| 2010–14 | 13.4% | 32.9% | 35.6% |
| 2015–19 | 11.0% | 33.1% | 36.0% |
| 2020–24 | 6.9% | 32.4% | 34.8% |
| Change | −4.0 pts | +1.4 pts | +1.5 pts |
Only 6.9% of households in ZIP 21675 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 49.0% have no mortgage at all, above 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 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 35.5% | 9.0% | 11.4% |
| 2010–14 | 30.3% | 8.9% | 11.4% |
| 2015–19 | 50.6% | 8.9% | 11.1% |
| 2020–24 | 42.9% | 7.1% | 9.6% |
| Change | +7.3 pts | −1.9 pts | −1.8 pts |
Vacant homes make up 42.9% of the housing in ZIP 21675, 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 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1943 | 1974 | 1974 |
| 2010–14 | 1952 | 1975 | 1975 |
| 2015–19 | 1949 | 1976 | 1977 |
| 2020–24 | 1950 | 1978 | 1980 |
| Change | +7 | +4 | +6 |
ZIP 21675 is a place of older homes: half were built before 1950, while the national median is 1980. That means established neighborhoods, and more houses that may need updating.
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 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $745 | $1,249 | $965 |
| 2010–14 | $1,110 | $1,363 | $1,040 |
| 2015–19 | $923 | $1,576 | $1,213 |
| 2020–24 | $1,330 | $1,869 | $1,571 |
| Change | +$585 | +$620 | +$606 |
Rent in ZIP 21675 runs $1,330 a month at the median, utilities included, below the U.S. median of $1,571. The typical renter here spends 51.0% of household income on rent, 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 21675
Bachelor's degrees in ZIP 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 3.4% | 36.3% | 28.4% |
| 2010–14 | 7.6% | 37.7% | 29.6% |
| 2015–19 | 1.8% | 40.5% | 32.1% |
| 2020–24 | 26.0% | 43.4% | 35.6% |
| Change | +22.6 pts | +7.1 pts | +7.2 pts |
College degrees are less common in ZIP 21675 than nationally: 26.0% 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 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 75.3% | 88.0% | 84.9% |
| 2010–14 | 63.5% | 89.1% | 86.1% |
| 2015–19 | 83.2% | 90.2% | 87.7% |
| 2020–24 | 93.5% | 90.9% | 89.3% |
| Change | +18.2 pts | +2.9 pts | +4.3 pts |
High school completion in ZIP 21675 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 21675
| Period | ZIP 21675 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1.2% | 6.5% | 8.1% |
| 2010–14 | 5.0% | 8.1% | 9.4% |
| 2015–19 | 2.3% | 5.1% | 5.6% |
| 2020–24 | 0.0% | 5.0% | 5.4% |
| Change | −1.2 pts | −1.5 pts | −2.7 pts |
The survey found almost no one in ZIP 21675 out of work and looking, against 5.4% of the labor force nationally. 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 21675 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 21675 | 2.29 | 57.8 | 2.0% | 6.9% | 42.9% | 1950 | $1,330 | 26.0% | 93.5% | 0.0% |
| ZIP 21672 | 2.29 | 57.8 | 2.0% | 6.9% | 42.9% | 1950 | $1,330 | 26.0% | 93.5% | 0.0% |
| ZIP 21626 | 2.29 | 57.8 | 2.0% | 6.9% | 42.9% | 1950 | $1,330 | 26.0% | 93.5% | 0.0% |
| ZIP 21627 | 2.29 | 57.8 | 2.0% | 6.9% | 42.9% | 1950 | $1,330 | 26.0% | 93.5% | 0.0% |
| ZIP 21634 | 2.47 | 53.2 | 3.9% | 1.7% | 50.5% | 1980 | $1,256 | 25.4% | 90.2% | 4.1% |
| ZIP 21840 | 2.66 | 48.9 | 16.0% | 16.0% | 44.5% | 1962 | $1,199 | 20.2% | 100.0% | 15.7% |
| ZIP 21814 | 2.66 | 48.9 | 16.0% | 16.0% | 44.5% | 1962 | $1,199 | 20.2% | 100.0% | 15.7% |
| ZIP 21821 | 2.02 | 50.3 | 6.4% | 19.8% | 36.1% | 1967 | $1,297 | 9.9% | 80.9% | 6.3% |
| ZIP 21865 | 2.57 | 51.2 | 17.8% | 16.7% | 31.0% | 1971 | $1,199 | 19.0% | 97.8% | 16.0% |
| ZIP 21856 | 2.47 | 52.2 | 18.3% | 15.4% | 8.2% | 1988 | $1,199 | 23.1% | 91.4% | 14.2% |
| ZIP 20628 | 2.59 | 43.9 | 17.6% | 20.1% | 11.5% | 1976 | $1,589 | 35.0% | 93.5% | 6.9% |
All figures 2020–24.
Zip codes with similar populations: 29368, SC · 84540, UT · 39088, MS · 38772, MS · 86520, AZ · 38047, TN · 38046, TN · 32463, FL · 30807, GA · 30726, GA
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 21675. 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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