Population 419 · Census ACS 2020–24
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Population and households in ZIP 21677
Household size in ZIP 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.45 | 2.68 | 2.68 |
| 2010–14 | 2.71 | 2.73 | 2.73 |
| 2015–19 | 2.50 | 2.74 | 2.71 |
| 2020–24 | 2.33 | 2.68 | 2.65 |
| Change | −0.12 | +0.01 | −0.03 |
ZIP 21677 is a place of small households, averaging 2.33 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has dropped from 2.45 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 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 45.4 | 38.5 | 37.7 |
| 2010–14 | 47.0 | 39.3 | 38.6 |
| 2015–19 | 49.4 | 40.2 | 39.6 |
| 2020–24 | 52.4 | 40.6 | 40.1 |
| Change | +7.0 | +2.1 | +2.3 |
With a median age of 52.4, ZIP 21677 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 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 3.2% | 12.5% | 12.3% |
| 2010–14 | 4.6% | 12.6% | 12.3% |
| 2015–19 | 6.2% | 11.7% | 11.6% |
| 2020–24 | 5.4% | 11.7% | 11.6% |
| Change | +2.2 pts | −0.9 pts | −0.6 pts |
Single parents head only 5.4% of households in ZIP 21677, 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 21677
Renters in ZIP 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 8.5% | 31.0% | 33.3% |
| 2010–14 | 13.0% | 32.9% | 35.6% |
| 2015–19 | 13.9% | 33.1% | 36.0% |
| 2020–24 | 20.5% | 32.4% | 34.8% |
| Change | +12.0 pts | +1.4 pts | +1.5 pts |
Only 20.5% of households in ZIP 21677 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Just over half of owners (52.5%) have paid off their mortgages, well 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 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 30.6% | 9.0% | 11.4% |
| 2010–14 | 21.8% | 8.9% | 11.4% |
| 2015–19 | 20.2% | 8.9% | 11.1% |
| 2020–24 | 23.4% | 7.1% | 9.6% |
| Change | −7.2 pts | −1.9 pts | −1.8 pts |
Vacancy is high in ZIP 21677: 23.4% 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 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1985 | 1974 | 1974 |
| 2010–14 | 1972 | 1975 | 1975 |
| 2015–19 | 1979 | 1976 | 1977 |
| 2020–24 | 1976 | 1978 | 1980 |
| Change | −9 | +4 | +6 |
The typical home in ZIP 21677 was built around 1976, 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 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $704 | $1,249 | $965 |
| 2010–14 | $1,075 | $1,363 | $1,040 |
| 2015–19 | $1,583 | $1,576 | $1,213 |
| 2020–24 | $1,256 | $1,869 | $1,571 |
| Change | +$552 | +$620 | +$606 |
Rent in ZIP 21677 runs $1,256 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 28.7% of household income on rent, just under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
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 21677
Bachelor's degrees in ZIP 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 19.2% | 36.3% | 28.4% |
| 2010–14 | 24.7% | 37.7% | 29.6% |
| 2015–19 | 33.0% | 40.5% | 32.1% |
| 2020–24 | 18.0% | 43.4% | 35.6% |
| Change | −1.1 pts | +7.1 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 21677: 18.0% of adults 25 and older hold a bachelor's or higher, well 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 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 95.4% | 88.0% | 84.9% |
| 2010–14 | 89.7% | 89.1% | 86.1% |
| 2015–19 | 91.9% | 90.2% | 87.7% |
| 2020–24 | 85.2% | 90.9% | 89.3% |
| Change | −10.1 pts | +2.9 pts | +4.3 pts |
About one in seven adults in ZIP 21677 never finished high school, more than nationally: 85.2% have a diploma or equivalent, against 89.3% across the U.S.
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 21677
| Period | ZIP 21677 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 7.6% | 6.5% | 8.1% |
| 2010–14 | 12.7% | 8.1% | 9.4% |
| 2015–19 | 4.0% | 5.1% | 5.6% |
| 2020–24 | 3.0% | 5.0% | 5.4% |
| Change | −4.7 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 21677 has been low: just 3.0% 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 21677 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 21677 | 2.33 | 52.4 | 5.4% | 20.5% | 23.4% | 1976 | $1,256 | 18.0% | 85.2% | 3.0% |
| ZIP 21648 | 2.46 | 53.2 | 4.0% | 2.7% | 49.5% | 1980 | $1,256 | 25.1% | 90.1% | 4.0% |
| ZIP 21622 | 2.35 | 55.1 | 3.4% | 10.6% | 39.6% | 1965 | $1,291 | 23.7% | 90.4% | 1.9% |
| ZIP 21613 | 2.30 | 42.3 | 14.2% | 48.3% | 17.0% | 1970 | $1,140 | 20.8% | 86.3% | 8.5% |
| ZIP 21669 | 2.47 | 53.2 | 3.9% | 1.7% | 50.5% | 1980 | $1,256 | 25.4% | 90.2% | 4.1% |
| ZIP 21835 | 1.96 | 62.7 | 7.1% | 26.1% | 11.0% | 1980 | $1,020 | 14.2% | 79.9% | 2.4% |
| ZIP 21654 | 1.89 | 65.2 | 8.3% | 13.7% | 30.8% | 1975 | $1,915 | 61.8% | 95.5% | 10.5% |
| ZIP 21673 | 2.28 | 47.4 | 13.7% | 24.8% | 20.9% | 1982 | $1,364 | 35.6% | 94.8% | 5.3% |
| ZIP 21631 | 2.49 | 50.1 | 10.5% | 18.3% | 7.8% | 1983 | $1,198 | 20.6% | 90.3% | 6.8% |
| ZIP 21664 | 3.10 | 33.1 | 22.8% | 29.0% | 7.4% | 1982 | $1,481 | 27.1% | 95.1% | 4.3% |
| ZIP 21869 | 2.57 | 49.0 | 4.7% | 13.2% | 18.1% | 1963 | $1,437 | 13.9% | 86.5% | 5.3% |
All figures 2020–24.
Zip codes with similar populations: 33001, FL · 15676, PA · 15739, PA · 37376, TN · 85333, AZ · 16853, PA · 85141, AZ · 36773, AL · 80727, CO · 22438, VA
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 21677. 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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