ZIP 21821 vs ZIP 21824
A side-by-side comparison of ZIP Code 21821 and ZIP Code 21824: population, income, housing, and more.
ZIP 21821 and ZIP 21824 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21821 has the higher population (736 vs 234 in ZIP 21824). ZIP 21824 has the higher median household income ($87,938 vs $51,500 in ZIP 21821). ZIP 21821 has the higher median home value ($151,700 vs $109,000 in ZIP 21824).
Population, income & housing
| ZIP 21821 | ZIP 21824 | |
|---|---|---|
| Population | 736 | 234 |
| Median age | 56.5 yrs | 48.6 yrs |
| Median household income | $51,500 | $87,938 |
| Median home value | $151,700 | $109,000 |
| Median gross rent | $1,356 | — |
| Housing units | 695 | 151 |
| Homeownership rate | 89.8% | 80.2% |
| Bachelor's degree or higher | 8.4% | 1.1% |
| Unemployment rate | 1.9% | 0.0% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21821 | ZIP 21824 | |
|---|---|---|
| Population | 871 → 736 (-15.5%) | 101 → 234 (+131.7%) |
| Median household income | $37,314 → $51,500 (+38.0%) | $73,047 → $87,938 (+20.4%) |
| Median home value | $160,200 → $151,700 (-5.3%) | $111,400 → $109,000 (-2.2%) |
| Median gross rent | $860 → $1,356 (+57.7%) | — |
ZIP 21821
871736
$37,314$51,500
$160,200$151,700
$860$1,356
ZIP 21824
101234
$73,047$87,938
$111,400$109,000
Age & race/ethnicity
Age distribution (share)
| ZIP 21821 | ZIP 21824 | |
|---|---|---|
| Under 5 | 1.2% | 0.0% |
| 5 to 17 | 9.4% | 22.6% |
| 18 to 24 | 3.3% | 2.1% |
| 25 to 34 | 8.3% | 1.7% |
| 35 to 44 | 22.1% | 14.1% |
| 45 to 54 | 3.4% | 21.4% |
| 55 to 64 | 21.9% | 0.9% |
| 65 to 74 | 15.6% | 23.1% |
| 75 and over | 14.8% | 14.1% |
Race & ethnicity (share)
| ZIP 21821 | ZIP 21824 | |
|---|---|---|
| White (non-Hispanic) | 90.9% | 99.1% |
| Black or African American | 4.3% | 0.0% |
| American Indian & Alaska Native | 0.0% | 0.0% |
| Asian | 0.0% | 0.0% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.0% | 0.0% |
| Two or more races | 0.3% | 0.9% |
| Hispanic or Latino | 4.5% | 0.0% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21821 | ZIP 21824 | |
|---|---|---|
| No high school diploma | 13.9% | 31.8% |
| High school graduate | 34.7% | 51.1% |
| Some college or associate's | 43.1% | 15.9% |
| Bachelor's degree | 6.6% | 0.0% |
| Graduate or professional degree | 1.7% | 1.1% |
Commute to work
How workers get to work (share)
| ZIP 21821 | ZIP 21824 | |
|---|---|---|
| Drove alone | 44.5% | 55.7% |
| Carpooled | 44.9% | 5.1% |
| Public transit | 0.0% | 0.0% |
| Walked | 1.0% | 0.0% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 8.0% | 19.0% |
| Other means | 1.7% | 20.3% |
Housing
Units in structure (share)
| ZIP 21821 | ZIP 21824 | |
|---|---|---|
| 1-unit, detached | 87.3% | 93.4% |
| 1-unit, attached | 2.2% | 0.0% |
| 2 to 4 units | 0.0% | 0.0% |
| 5 to 19 units | 0.0% | 0.0% |
| 20 or more units | 0.0% | 0.0% |
| Mobile home & other | 10.5% | 6.6% |
Poverty & households
| ZIP 21821 | ZIP 21824 | |
|---|---|---|
| Poverty rate | 15.4% | 7.7% |
| Average household size | 2.15 | 2.21 |
| Mean commute (minutes) | 29 | 8 |
| Median year structure built | 1965 | 1938 |