Population 134 · Census ACS 2020–24
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Population and households in ZIP 21647
Household size in ZIP 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.33 | 2.68 | 2.68 |
| 2010–14 | 2.08 | 2.73 | 2.73 |
| 2015–19 | 2.35 | 2.74 | 2.71 |
| 2020–24 | 1.96 | 2.68 | 2.65 |
| Change | −0.37 | +0.01 | −0.03 |
ZIP 21647 is a place of small households, averaging 1.96 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has dropped from 2.33, 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 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 58.8 | 38.5 | 37.7 |
| 2010–14 | 57.8 | 39.3 | 38.6 |
| 2015–19 | 48.4 | 40.2 | 39.6 |
| 2020–24 | 60.2 | 40.6 | 40.1 |
| Change | +1.4 | +2.1 | +2.3 |
ZIP 21647 skews older: half of its residents are older than 60.2, 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 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 3.4% | 12.5% | 12.3% |
| 2010–14 | 8.8% | 12.6% | 12.3% |
| 2015–19 | 5.7% | 11.7% | 11.6% |
| 2020–24 | 9.8% | 11.7% | 11.6% |
| Change | +6.4 pts | −0.9 pts | −0.6 pts |
Single-parent households are a bit less common in ZIP 21647 than nationally: 9.8%, against 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 21647
Renters in ZIP 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 16.4% | 31.0% | 33.3% |
| 2010–14 | 24.1% | 32.9% | 35.6% |
| 2015–19 | 17.0% | 33.1% | 36.0% |
| 2020–24 | 3.2% | 32.4% | 34.8% |
| Change | −13.2 pts | +1.4 pts | +1.5 pts |
Only 3.2% of households in ZIP 21647 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 42.3% 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 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 23.6% | 9.0% | 11.4% |
| 2010–14 | 33.2% | 8.9% | 11.4% |
| 2015–19 | 44.1% | 8.9% | 11.1% |
| 2020–24 | 28.7% | 7.1% | 9.6% |
| Change | +5.2 pts | −1.9 pts | −1.8 pts |
Vacancy is high in ZIP 21647: 28.7% 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 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1971 | 1974 | 1974 |
| 2010–14 | 1975 | 1975 | 1975 |
| 2015–19 | 1982 | 1976 | 1977 |
| 2020–24 | 1981 | 1978 | 1980 |
| Change | +10 | +4 | +6 |
The typical home in ZIP 21647 was built around 1981, 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 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $989 | $1,249 | $965 |
| 2010–14 | $1,047 | $1,363 | $1,040 |
| 2015–19 | $1,330 | $1,576 | $1,213 |
| 2020–24 | $1,193 | $1,869 | $1,571 |
| Change | +$204 | +$620 | +$606 |
Rent in ZIP 21647 runs $1,193 a month at the median, utilities included, well 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 21647
Bachelor's degrees in ZIP 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 22.1% | 36.3% | 28.4% |
| 2010–14 | 35.2% | 37.7% | 29.6% |
| 2015–19 | 32.6% | 40.5% | 32.1% |
| 2020–24 | 46.9% | 43.4% | 35.6% |
| Change | +24.8 pts | +7.1 pts | +7.2 pts |
ZIP 21647 is highly educated: nearly half of adults 25 and older (46.9%) hold at least a bachelor's degree, far above 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 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 76.6% | 88.0% | 84.9% |
| 2010–14 | 84.8% | 89.1% | 86.1% |
| 2015–19 | 96.9% | 90.2% | 87.7% |
| 2020–24 | 92.4% | 90.9% | 89.3% |
| Change | +15.8 pts | +2.9 pts | +4.3 pts |
About nine in ten adults in ZIP 21647 have finished high school (92.4%), a bit 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 21647
| Period | ZIP 21647 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 4.5% | 6.5% | 8.1% |
| 2010–14 | 9.8% | 8.1% | 9.4% |
| 2015–19 | 0.0% | 5.1% | 5.6% |
| 2020–24 | 1.3% | 5.0% | 5.4% |
| Change | −3.1 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 21647 has been low: just 1.3% 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 21647 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 21647 | 1.96 | 60.2 | 9.8% | 3.2% | 28.7% | 1981 | $1,193 | 46.9% | 92.4% | 1.3% |
| ZIP 21676 | 1.96 | 60.2 | 9.8% | 3.2% | 28.7% | 1981 | $1,193 | 46.9% | 92.4% | 1.3% |
| ZIP 21624 | 1.96 | 60.2 | 9.8% | 3.2% | 28.7% | 1981 | $1,193 | 46.9% | 92.4% | 1.3% |
| ZIP 21663 | 2.17 | 56.1 | 4.3% | 22.4% | 24.5% | 1980 | $1,107 | 52.7% | 89.7% | 5.4% |
| ZIP 21612 | 2.18 | 68.4 | 2.4% | 0.0% | 42.0% | 1972 | $1,056 | 48.3% | 98.8% | 0.0% |
| ZIP 21665 | 1.96 | 59.9 | 9.2% | 3.8% | 28.9% | 1979 | $1,193 | 44.9% | 92.5% | 2.5% |
| ZIP 21652 | 2.18 | 68.4 | 2.4% | 0.0% | 42.0% | 1972 | $1,056 | 48.3% | 98.8% | 0.0% |
| ZIP 21653 | 2.15 | 54.8 | 4.0% | 9.1% | 28.2% | 1984 | $2,042 | 63.2% | 98.0% | 6.7% |
| ZIP 21671 | 1.99 | 57.1 | 3.5% | 9.4% | 31.0% | 1964 | $1,193 | 26.1% | 93.5% | 13.4% |
| ZIP 21662 | 2.15 | 54.8 | 4.0% | 9.1% | 28.2% | 1984 | $2,042 | 63.2% | 98.0% | 6.7% |
| ZIP 21666 | 2.64 | 45.5 | 7.0% | 15.2% | 7.9% | 1990 | $2,163 | 40.3% | 94.5% | 4.6% |
All figures 2020–24.
Zip codes with similar populations: 66019, KS · 59338, MT · 61419, IL · 61855, IL · 62065, IL · 62266, IL · 63467, MO · 63674, MO · 65443, MO · 59314, MT
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 21647. 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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