ZIP 21921 vs ZIP 21930
A side-by-side comparison of ZIP Code 21921 and ZIP Code 21930: population, income, housing, and more.
ZIP 21921 and ZIP 21930 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21921 has the higher population (45,698 vs 30 in ZIP 21930). Since 2019, ZIP 21921's population has grown faster (-1.0% vs -77.3%).
Population, income & housing
| ZIP 21921 | ZIP 21930 | |
|---|---|---|
| Population | 45,698 | 30 |
| Median age | 39.1 yrs | 62.5 yrs |
| Median household income | $84,608 | — |
| Median home value | $296,000 | — |
| Median gross rent | $1,413 | — |
| Housing units | 18,782 | 49 |
| Homeownership rate | 68.3% | 100.0% |
| Bachelor's degree or higher | 27.9% | 0.0% |
| Unemployment rate | 3.9% | 0.0% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21921 | ZIP 21930 | |
|---|---|---|
| Population | 46,162 → 45,698 (-1.0%) | 132 → 30 (-77.3%) |
| Median household income | $72,992 → $84,608 (+15.9%) | — |
| Median home value | $234,300 → $296,000 (+26.3%) | — |
| Median gross rent | $1,160 → $1,413 (+21.8%) | — |
ZIP 21921
46,16245,698
$72,992$84,608
$234,300$296,000
$1,160$1,413
ZIP 21930
13230
Age & race/ethnicity
Age distribution (share)
| ZIP 21921 | ZIP 21930 | |
|---|---|---|
| Under 5 | 6.0% | 0.0% |
| 5 to 17 | 17.0% | 0.0% |
| 18 to 24 | 7.2% | 0.0% |
| 25 to 34 | 15.1% | 0.0% |
| 35 to 44 | 11.6% | 0.0% |
| 45 to 54 | 12.4% | 26.7% |
| 55 to 64 | 14.6% | 23.3% |
| 65 to 74 | 10.2% | 23.3% |
| 75 and over | 5.9% | 26.7% |
Race & ethnicity (share)
| ZIP 21921 | ZIP 21930 | |
|---|---|---|
| White (non-Hispanic) | 75.8% | 100.0% |
| Black or African American | 9.4% | 0.0% |
| American Indian & Alaska Native | 0.1% | 0.0% |
| Asian | 1.7% | 0.0% |
| Native Hawaiian & Pacific Islander | 0.1% | 0.0% |
| Some other race | 0.8% | 0.0% |
| Two or more races | 5.8% | 0.0% |
| Hispanic or Latino | 6.4% | 0.0% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21921 | ZIP 21930 | |
|---|---|---|
| No high school diploma | 7.7% | 0.0% |
| High school graduate | 37.8% | 73.3% |
| Some college or associate's | 26.6% | 26.7% |
| Bachelor's degree | 18.3% | 0.0% |
| Graduate or professional degree | 9.6% | 0.0% |
Commute to work
How workers get to work (share)
| ZIP 21921 | ZIP 21930 | |
|---|---|---|
| Drove alone | 77.2% | 100.0% |
| Carpooled | 10.4% | 0.0% |
| Public transit | 0.8% | 0.0% |
| Walked | 1.4% | 0.0% |
| Bicycle | 0.2% | 0.0% |
| Worked from home | 8.8% | 0.0% |
| Other means | 1.2% | 0.0% |
Housing
Units in structure (share)
| ZIP 21921 | ZIP 21930 | |
|---|---|---|
| 1-unit, detached | 66.0% | 100.0% |
| 1-unit, attached | 11.2% | 0.0% |
| 2 to 4 units | 6.1% | 0.0% |
| 5 to 19 units | 8.3% | 0.0% |
| 20 or more units | 3.6% | 0.0% |
| Mobile home & other | 4.7% | 0.0% |
Poverty & households
| ZIP 21921 | ZIP 21930 | |
|---|---|---|
| Poverty rate | 13.6% | 0.0% |
| Average household size | 2.56 | 3.75 |
| Mean commute (minutes) | 28 | — |
| Median year structure built | 1987 | — |