ZIP 21230 vs ZIP 21231
A side-by-side comparison of ZIP Code 21230 and ZIP Code 21231: population, income, housing, and more.
ZIP 21230 and ZIP 21231 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21230 has the higher population (33,509 vs 14,556 in ZIP 21231). ZIP 21230 has the higher median household income ($94,164 vs $85,382 in ZIP 21231). ZIP 21231 has the higher median home value ($336,500 vs $327,700 in ZIP 21230).
Population, income & housing
| ZIP 21230 | ZIP 21231 | |
|---|---|---|
| Population | 33,509 | 14,556 |
| Median age | 33.0 yrs | 32.4 yrs |
| Median household income | $94,164 | $85,382 |
| Median home value | $327,700 | $336,500 |
| Median gross rent | $1,771 | $1,710 |
| Housing units | 18,070 | 9,342 |
| Homeownership rate | 49.6% | 35.0% |
| Bachelor's degree or higher | 58.8% | 65.9% |
| Unemployment rate | 3.4% | 4.4% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21230 | ZIP 21231 | |
|---|---|---|
| Population | 34,274 → 33,509 (-2.2%) | 15,854 → 14,556 (-8.2%) |
| Median household income | $85,150 → $94,164 (+10.6%) | $71,408 → $85,382 (+19.6%) |
| Median home value | $276,100 → $327,700 (+18.7%) | $294,700 → $336,500 (+14.2%) |
| Median gross rent | $1,490 → $1,771 (+18.9%) | $1,294 → $1,710 (+32.1%) |
ZIP 21230
34,27433,509
$85,150$94,164
$276,100$327,700
$1,490$1,771
ZIP 21231
15,85414,556
$71,408$85,382
$294,700$336,500
$1,294$1,710
Age & race/ethnicity
Age distribution (share)
| ZIP 21230 | ZIP 21231 | |
|---|---|---|
| Under 5 | 6.2% | 6.0% |
| 5 to 17 | 13.1% | 8.4% |
| 18 to 24 | 6.5% | 8.6% |
| 25 to 34 | 28.9% | 33.2% |
| 35 to 44 | 15.7% | 16.3% |
| 45 to 54 | 8.3% | 10.4% |
| 55 to 64 | 10.3% | 9.0% |
| 65 to 74 | 7.5% | 6.1% |
| 75 and over | 3.5% | 2.1% |
Race & ethnicity (share)
| ZIP 21230 | ZIP 21231 | |
|---|---|---|
| White (non-Hispanic) | 55.0% | 52.9% |
| Black or African American | 23.0% | 29.4% |
| American Indian & Alaska Native | 0.1% | 0.1% |
| Asian | 3.5% | 4.3% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 1.3% | 0.4% |
| Two or more races | 4.1% | 4.3% |
| Hispanic or Latino | 13.0% | 8.6% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21230 | ZIP 21231 | |
|---|---|---|
| No high school diploma | 11.8% | 5.5% |
| High school graduate | 13.7% | 14.3% |
| Some college or associate's | 15.7% | 14.3% |
| Bachelor's degree | 31.5% | 34.8% |
| Graduate or professional degree | 27.3% | 31.1% |
Commute to work
How workers get to work (share)
| ZIP 21230 | ZIP 21231 | |
|---|---|---|
| Drove alone | 59.7% | 46.3% |
| Carpooled | 6.9% | 3.8% |
| Public transit | 4.3% | 4.8% |
| Walked | 6.2% | 17.2% |
| Bicycle | 1.3% | 1.6% |
| Worked from home | 19.9% | 24.8% |
| Other means | 1.8% | 1.4% |
Housing
Units in structure (share)
| ZIP 21230 | ZIP 21231 | |
|---|---|---|
| 1-unit, detached | 6.1% | 3.2% |
| 1-unit, attached | 61.5% | 47.7% |
| 2 to 4 units | 5.7% | 13.7% |
| 5 to 19 units | 4.3% | 8.6% |
| 20 or more units | 22.2% | 26.7% |
| Mobile home & other | 0.1% | 0.1% |
Poverty & households
| ZIP 21230 | ZIP 21231 | |
|---|---|---|
| Poverty rate | 15.8% | 19.9% |
| Average household size | 2.08 | 1.85 |
| Mean commute (minutes) | 26 | 26 |
| Median year structure built | 1946 | 1938 |