21636, MD Demographics

Population 728 · Census ACS 2020–24

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21636, MD map of median age by neighborhood
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Population and households in ZIP 21636

Household size in ZIP 21636

Household size, people per household
PeriodZIP 21636MarylandU.S.
2006–102.862.682.68
2010–142.782.732.73
2015–192.632.742.71
2020–242.452.682.65
Change−0.42+0.01−0.03
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Households in ZIP 21636 run small, averaging 2.45 people against 2.65 nationally, which usually means more singles and couples and fewer children. Household size has dropped from 2.86 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 21636

Median age, years
PeriodZIP 21636MarylandU.S.
2006–1038.338.537.7
2010–1440.839.338.6
2015–1945.040.239.6
2020–2442.640.640.1
Change+4.3+2.1+2.3
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The median resident of ZIP 21636 is 42.6 years old, a bit older than the national median of 40.1.

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 21636

Single-parent households, % of households
PeriodZIP 21636MarylandU.S.
2006–1013.3%12.5%12.3%
2010–148.4%12.6%12.3%
2015–1911.2%11.7%11.6%
2020–2422.2%11.7%11.6%
Change+8.9 pts−0.9 pts−0.6 pts
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Single parents head more than one in five households in ZIP 21636 (22.2%), well above 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 21636

Renters in ZIP 21636

Renters, % of occupied homes
PeriodZIP 21636MarylandU.S.
2006–1025.7%31.0%33.3%
2010–1427.3%32.9%35.6%
2015–1921.8%33.1%36.0%
2020–2414.3%32.4%34.8%
Change−11.4 pts+1.4 pts+1.5 pts
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Only 14.3% of households in ZIP 21636 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. More than a third of owners (37.2%) have paid off their mortgages, 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 21636

Vacant homes, % of all homes
PeriodZIP 21636MarylandU.S.
2006–107.7%9.0%11.4%
2010–1412.9%8.9%11.4%
2015–198.8%8.9%11.1%
2020–2411.3%7.1%9.6%
Change+3.6 pts−1.9 pts−1.8 pts
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A few more homes sit empty in ZIP 21636 than nationally: 11.3%, against 9.6%. The count includes vacation homes and homes between owners or tenants, not just abandoned ones.

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 21636

Age of homes, median year built
PeriodZIP 21636MarylandU.S.
2006–10198619741974
2010–14198319751975
2015–19198019761977
2020–24198719781980
Change+1+4+6
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The housing in ZIP 21636 is younger than the country's: half of it was built after 1987, against 1980 nationally.

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 21636

Rent, per month
PeriodZIP 21636MarylandU.S.
2006–10$1,108$1,249$965
2010–14$836$1,363$1,040
2015–19$957$1,576$1,213
2020–24$1,609$1,869$1,571
Change+$501+$620+$606
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The median renter in ZIP 21636 pays $1,609 a month for rent and utilities, close to the national median of $1,571. Rents here are lower than in Maryland as a whole ($1,869). The typical renter here spends 30.2% of household income on rent, just over 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 21636

Bachelor's degrees in ZIP 21636

Bachelor's degrees, % of adults 25+
PeriodZIP 21636MarylandU.S.
2006–109.8%36.3%28.4%
2010–1410.8%37.7%29.6%
2015–1913.4%40.5%32.1%
2020–2411.2%43.4%35.6%
Change+1.4 pts+7.1 pts+7.2 pts
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College degrees are relatively uncommon in ZIP 21636: 11.2% 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 21636

High school graduates, % of adults 25+
PeriodZIP 21636MarylandU.S.
2006–1072.5%88.0%84.9%
2010–1477.1%89.1%86.1%
2015–1981.7%90.2%87.7%
2020–2479.7%90.9%89.3%
Change+7.2 pts+2.9 pts+4.3 pts
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About one in five adults in ZIP 21636 never finished high school, well above the national share: only 79.7% have a diploma or equivalent, against 89.3% nationally.

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 21636

Unemployment, % of the labor force
PeriodZIP 21636MarylandU.S.
2006–105.9%6.5%8.1%
2010–149.8%8.1%9.4%
2015–194.1%5.1%5.6%
2020–241.1%5.0%5.4%
Change−4.8 pts−1.5 pts−2.7 pts
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The job market in ZIP 21636 has been strong: just 1.1% 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 21636 compared with nearby ZIP codes

ZIP codeHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
ZIP 216362.4542.622.2%14.3%11.3%1987$1,60911.2%79.7%1.1%
ZIP 216402.7037.223.8%13.7%8.9%1983$1,64611.2%75.6%2.3%
ZIP 216392.7038.511.3%25.2%7.7%1979$1,19214.7%83.5%2.2%
ZIP 199642.3345.211.7%15.7%2.8%1997$1,1456.3%75.9%3.1%
ZIP 216493.1239.722.2%14.7%10.6%1981$1,96513.0%77.3%3.7%
ZIP 216442.9154.313.9%11.5%2.8%1988$1,62512.9%88.1%7.4%
ZIP 216602.7938.08.2%23.3%4.2%1989$1,04315.7%80.8%8.5%
ZIP 216072.9154.313.9%11.5%2.8%1988$1,62512.9%88.1%7.4%
ZIP 199532.5940.913.0%22.1%3.4%1990$1,2718.4%81.5%8.6%
ZIP 216572.7642.53.4%13.2%5.7%1994$1,19627.5%90.7%2.5%
ZIP 216412.3048.23.3%21.7%10.1%1986$1,57024.0%96.4%1.7%

All figures 2020–24.

Zip codes with similar populations: 99123, WA · 87025, NM · 87942, NM · 89124, NV · 91917, CA · 18056, PA · 97826, OR · 13061, NY · 12960, NY · 08320, NJ

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 21636. 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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