21634, MD Demographics

Population 356 · Census ACS 2020–24

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21634, MD map of median age by neighborhood
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Population and households in ZIP 21634

Household size in ZIP 21634

Household size, people per household
PeriodZIP 21634MarylandU.S.
2006–101.912.682.68
2010–142.442.732.73
2015–192.232.742.71
2020–242.472.682.65
Change+0.56+0.01−0.03
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The average household in ZIP 21634 has 2.47 people, under the U.S. average of 2.65. Since 2006–10, household size has climbed from 1.91, 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 21634

Median age, years
PeriodZIP 21634MarylandU.S.
2006–1048.638.537.7
2010–1450.139.338.6
2015–1954.240.239.6
2020–2453.240.640.1
Change+4.6+2.1+2.3
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ZIP 21634 skews older: half of its residents are older than 53.2, 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 21634

Single-parent households, % of households
PeriodZIP 21634MarylandU.S.
2006–102.4%12.5%12.3%
2010–146.8%12.6%12.3%
2015–196.7%11.7%11.6%
2020–243.9%11.7%11.6%
Change+1.5 pts−0.9 pts−0.6 pts
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Single parents head only 3.9% of households in ZIP 21634, 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 21634

Renters in ZIP 21634

Renters, % of occupied homes
PeriodZIP 21634MarylandU.S.
2006–108.3%31.0%33.3%
2010–1414.4%32.9%35.6%
2015–1912.0%33.1%36.0%
2020–241.7%32.4%34.8%
Change−6.7 pts+1.4 pts+1.5 pts
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ZIP 21634 is overwhelmingly a place of homeowners: only 1.7% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 64.4% have no mortgage at all, 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 21634

Vacant homes, % of all homes
PeriodZIP 21634MarylandU.S.
2006–1049.5%9.0%11.4%
2010–1452.8%8.9%11.4%
2015–1944.3%8.9%11.1%
2020–2450.5%7.1%9.6%
Change+1.0 pts−1.9 pts−1.8 pts
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Vacancy is high in ZIP 21634: 50.5% 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 21634

Age of homes, median year built
PeriodZIP 21634MarylandU.S.
2006–10196719741974
2010–14197119751975
2015–19197219761977
2020–24198019781980
Change+13+4+6
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The typical home in ZIP 21634 was built around 1980, the same vintage as the country's housing overall.

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 21634

Rent, per month
PeriodZIP 21634MarylandU.S.
2006–10$704$1,249$965
2010–14$962$1,363$1,040
2015–19$2,102$1,576$1,213
2020–24$1,256$1,869$1,571
Change+$552+$620+$606
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Rent in ZIP 21634 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 21634

Bachelor's degrees in ZIP 21634

Bachelor's degrees, % of adults 25+
PeriodZIP 21634MarylandU.S.
2006–1021.0%36.3%28.4%
2010–1415.3%37.7%29.6%
2015–1922.5%40.5%32.1%
2020–2425.4%43.4%35.6%
Change+4.4 pts+7.1 pts+7.2 pts
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College degrees are relatively uncommon in ZIP 21634: 25.4% 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 21634

High school graduates, % of adults 25+
PeriodZIP 21634MarylandU.S.
2006–1084.8%88.0%84.9%
2010–1467.6%89.1%86.1%
2015–1997.0%90.2%87.7%
2020–2490.2%90.9%89.3%
Change+5.4 pts+2.9 pts+4.3 pts
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About as many adults in ZIP 21634 have finished high school as nationally: 90.2%, 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 21634

Unemployment, % of the labor force
PeriodZIP 21634MarylandU.S.
2006–107.6%6.5%8.1%
2010–143.2%8.1%9.4%
2015–193.4%5.1%5.6%
2020–244.1%5.0%5.4%
Change−3.6 pts−1.5 pts−2.7 pts
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Jobs have been a little easier to find in ZIP 21634 than nationally: unemployment was 4.1%, against 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 21634 compared with nearby ZIP codes

ZIP codeHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
ZIP 216342.4753.23.9%1.7%50.5%1980$1,25625.4%90.2%4.1%
ZIP 216262.2957.82.0%6.9%42.9%1950$1,33026.0%93.5%0.0%
ZIP 216222.3555.13.4%10.6%39.6%1965$1,29123.7%90.4%1.9%
ZIP 216752.2957.82.0%6.9%42.9%1950$1,33026.0%93.5%0.0%
ZIP 216722.2957.82.0%6.9%42.9%1950$1,33026.0%93.5%0.0%
ZIP 216272.2957.82.0%6.9%42.9%1950$1,33026.0%93.5%0.0%
ZIP 216692.4753.23.9%1.7%50.5%1980$1,25625.4%90.2%4.1%
ZIP 206572.8138.38.6%13.8%9.7%1990$1,84933.2%94.4%3.3%
ZIP 206703.3423.511.5%89.0%15.5%1995$2,29036.4%100.0%14.3%
ZIP 206292.1554.67.4%4.5%12.8%2000$2,13044.3%95.0%0.0%
ZIP 206672.6932.010.3%26.9%8.3%1996$1,88646.6%97.4%2.8%

All figures 2020–24.

Zip codes with similar populations: 04237, ME · 13360, NY · 96015, CA · 12752, NY · 12743, NY · 12422, NY · 12177, NY · 12042, NY · 05837, VT · 05748, VT

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 21634. 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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