ZIP 21231 vs ZIP 21237
A side-by-side comparison of ZIP Code 21231 and ZIP Code 21237: population, income, housing, and more.
ZIP 21231 and ZIP 21237 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21237 has the higher population (30,851 vs 14,556 in ZIP 21231). ZIP 21237 has the higher median household income ($90,269 vs $85,382 in ZIP 21231). ZIP 21231 has the higher median home value ($336,500 vs $280,400 in ZIP 21237).
Population, income & housing
| ZIP 21231 | ZIP 21237 | |
|---|---|---|
| Population | 14,556 | 30,851 |
| Median age | 32.4 yrs | 42.3 yrs |
| Median household income | $85,382 | $90,269 |
| Median home value | $336,500 | $280,400 |
| Median gross rent | $1,710 | $1,440 |
| Housing units | 9,342 | 13,171 |
| Homeownership rate | 35.0% | 62.0% |
| Bachelor's degree or higher | 65.9% | 26.7% |
| Unemployment rate | 4.4% | 5.9% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21231 | ZIP 21237 | |
|---|---|---|
| Population | 15,854 → 14,556 (-8.2%) | 30,129 → 30,851 (+2.4%) |
| Median household income | $71,408 → $85,382 (+19.6%) | $69,226 → $90,269 (+30.4%) |
| Median home value | $294,700 → $336,500 (+14.2%) | $215,200 → $280,400 (+30.3%) |
| Median gross rent | $1,294 → $1,710 (+32.1%) | $1,200 → $1,440 (+20.0%) |
ZIP 21231
15,85414,556
$71,408$85,382
$294,700$336,500
$1,294$1,710
ZIP 21237
30,12930,851
$69,226$90,269
$215,200$280,400
$1,200$1,440
Age & race/ethnicity
Age distribution (share)
| ZIP 21231 | ZIP 21237 | |
|---|---|---|
| Under 5 | 6.0% | 4.8% |
| 5 to 17 | 8.4% | 12.1% |
| 18 to 24 | 8.6% | 7.4% |
| 25 to 34 | 33.2% | 14.5% |
| 35 to 44 | 16.3% | 14.6% |
| 45 to 54 | 10.4% | 14.5% |
| 55 to 64 | 9.0% | 14.8% |
| 65 to 74 | 6.1% | 11.4% |
| 75 and over | 2.1% | 5.9% |
Race & ethnicity (share)
| ZIP 21231 | ZIP 21237 | |
|---|---|---|
| White (non-Hispanic) | 52.9% | 42.4% |
| Black or African American | 29.4% | 38.1% |
| American Indian & Alaska Native | 0.1% | 0.5% |
| Asian | 4.3% | 6.8% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.1% |
| Some other race | 0.4% | 0.6% |
| Two or more races | 4.3% | 2.8% |
| Hispanic or Latino | 8.6% | 8.8% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21231 | ZIP 21237 | |
|---|---|---|
| No high school diploma | 5.5% | 7.7% |
| High school graduate | 14.3% | 31.1% |
| Some college or associate's | 14.3% | 34.5% |
| Bachelor's degree | 34.8% | 16.7% |
| Graduate or professional degree | 31.1% | 10.0% |
Commute to work
How workers get to work (share)
| ZIP 21231 | ZIP 21237 | |
|---|---|---|
| Drove alone | 46.3% | 69.3% |
| Carpooled | 3.8% | 10.4% |
| Public transit | 4.8% | 3.4% |
| Walked | 17.2% | 3.6% |
| Bicycle | 1.6% | 0.0% |
| Worked from home | 24.8% | 9.7% |
| Other means | 1.4% | 3.7% |
Housing
Units in structure (share)
| ZIP 21231 | ZIP 21237 | |
|---|---|---|
| 1-unit, detached | 3.2% | 49.5% |
| 1-unit, attached | 47.7% | 15.1% |
| 2 to 4 units | 13.7% | 1.9% |
| 5 to 19 units | 8.6% | 26.2% |
| 20 or more units | 26.7% | 6.7% |
| Mobile home & other | 0.1% | 0.7% |
Poverty & households
| ZIP 21231 | ZIP 21237 | |
|---|---|---|
| Poverty rate | 19.9% | 9.3% |
| Average household size | 1.85 | 2.47 |
| Mean commute (minutes) | 26 | 29 |
| Median year structure built | 1938 | 1980 |