ZIP 21813 vs ZIP 21821
A side-by-side comparison of ZIP Code 21813 and ZIP Code 21821: population, income, housing, and more.
ZIP 21813 and ZIP 21821 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21813 has the higher population (2,936 vs 736 in ZIP 21821). ZIP 21813 has the higher median household income ($102,332 vs $51,500 in ZIP 21821). ZIP 21813 has the higher median home value ($562,600 vs $151,700 in ZIP 21821).
Population, income & housing
| ZIP 21813 | ZIP 21821 | |
|---|---|---|
| Population | 2,936 | 736 |
| Median age | 54.9 yrs | 56.5 yrs |
| Median household income | $102,332 | $51,500 |
| Median home value | $562,600 | $151,700 |
| Median gross rent | $979 | $1,356 |
| Housing units | 1,604 | 695 |
| Homeownership rate | 81.9% | 89.8% |
| Bachelor's degree or higher | 22.7% | 8.4% |
| Unemployment rate | 3.5% | 1.9% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21813 | ZIP 21821 | |
|---|---|---|
| Population | 2,672 → 2,936 (+9.9%) | 871 → 736 (-15.5%) |
| Median household income | $75,577 → $102,332 (+35.4%) | $37,314 → $51,500 (+38.0%) |
| Median home value | $363,800 → $562,600 (+54.6%) | $160,200 → $151,700 (-5.3%) |
| Median gross rent | $1,050 → $979 (-6.8%) | $860 → $1,356 (+57.7%) |
ZIP 21813
2,6722,936
$75,577$102,332
$363,800$562,600
$1,050$979
ZIP 21821
871736
$37,314$51,500
$160,200$151,700
$860$1,356
Age & race/ethnicity
Age distribution (share)
| ZIP 21813 | ZIP 21821 | |
|---|---|---|
| Under 5 | 0.2% | 1.2% |
| 5 to 17 | 9.4% | 9.4% |
| 18 to 24 | 6.4% | 3.3% |
| 25 to 34 | 8.9% | 8.3% |
| 35 to 44 | 13.1% | 22.1% |
| 45 to 54 | 12.1% | 3.4% |
| 55 to 64 | 19.8% | 21.9% |
| 65 to 74 | 15.3% | 15.6% |
| 75 and over | 14.8% | 14.8% |
Race & ethnicity (share)
| ZIP 21813 | ZIP 21821 | |
|---|---|---|
| White (non-Hispanic) | 87.7% | 90.9% |
| Black or African American | 4.0% | 4.3% |
| 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 | 6.1% | 0.3% |
| Hispanic or Latino | 2.2% | 4.5% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21813 | ZIP 21821 | |
|---|---|---|
| No high school diploma | 9.2% | 13.9% |
| High school graduate | 27.3% | 34.7% |
| Some college or associate's | 40.8% | 43.1% |
| Bachelor's degree | 9.2% | 6.6% |
| Graduate or professional degree | 13.5% | 1.7% |
Commute to work
How workers get to work (share)
| ZIP 21813 | ZIP 21821 | |
|---|---|---|
| Drove alone | 75.4% | 44.5% |
| Carpooled | 14.7% | 44.9% |
| Public transit | 0.0% | 0.0% |
| Walked | 0.1% | 1.0% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 9.9% | 8.0% |
| Other means | 0.0% | 1.7% |
Housing
Units in structure (share)
| ZIP 21813 | ZIP 21821 | |
|---|---|---|
| 1-unit, detached | 84.4% | 87.3% |
| 1-unit, attached | 2.7% | 2.2% |
| 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 | 12.8% | 10.5% |
Poverty & households
| ZIP 21813 | ZIP 21821 | |
|---|---|---|
| Poverty rate | 4.1% | 15.4% |
| Average household size | 2.22 | 2.15 |
| Mean commute (minutes) | 24 | 29 |
| Median year structure built | 1988 | 1965 |