ZIP 21521 vs ZIP 21523
A side-by-side comparison of ZIP Code 21521 and ZIP Code 21523: population, income, housing, and more.
ZIP 21521 and ZIP 21523 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21521 has the higher population (1,521 vs 165 in ZIP 21523). ZIP 21523 has the higher median household income ($70,347 vs $69,758 in ZIP 21521). ZIP 21521 has the higher median home value ($130,900 vs $104,500 in ZIP 21523).
Population, income & housing
| ZIP 21521 | ZIP 21523 | |
|---|---|---|
| Population | 1,521 | 165 |
| Median age | 54.2 yrs | 38.1 yrs |
| Median household income | $69,758 | $70,347 |
| Median home value | $130,900 | $104,500 |
| Median gross rent | $917 | — |
| Housing units | 747 | 65 |
| Homeownership rate | 93.6% | 87.7% |
| Bachelor's degree or higher | 10.1% | 32.7% |
| Unemployment rate | 12.6% | 11.2% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21521 | ZIP 21523 | |
|---|---|---|
| Population | 1,102 → 1,521 (+38.0%) | 188 → 165 (-12.2%) |
| Median household income | $41,193 → $69,758 (+69.3%) | $38,958 → $70,347 (+80.6%) |
| Median home value | $95,100 → $130,900 (+37.6%) | $100,600 → $104,500 (+3.9%) |
| Median gross rent | $741 → $917 (+23.8%) | — |
ZIP 21521
1,1021,521
$41,193$69,758
$95,100$130,900
$741$917
ZIP 21523
188165
$38,958$70,347
$100,600$104,500
Age & race/ethnicity
Age distribution (share)
| ZIP 21521 | ZIP 21523 | |
|---|---|---|
| Under 5 | 4.3% | 0.0% |
| 5 to 17 | 10.9% | 21.8% |
| 18 to 24 | 5.9% | 11.5% |
| 25 to 34 | 7.3% | 10.3% |
| 35 to 44 | 7.4% | 15.2% |
| 45 to 54 | 17.4% | 0.0% |
| 55 to 64 | 20.6% | 23.0% |
| 65 to 74 | 11.0% | 9.1% |
| 75 and over | 15.2% | 9.1% |
Race & ethnicity (share)
| ZIP 21521 | ZIP 21523 | |
|---|---|---|
| White (non-Hispanic) | 99.0% | 81.2% |
| Black or African American | 0.0% | 0.0% |
| American Indian & Alaska Native | 0.0% | 0.0% |
| Asian | 0.0% | 10.9% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.4% | 0.0% |
| Two or more races | 0.3% | 7.9% |
| Hispanic or Latino | 0.3% | 0.0% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21521 | ZIP 21523 | |
|---|---|---|
| No high school diploma | 10.7% | 0.0% |
| High school graduate | 44.0% | 49.1% |
| Some college or associate's | 35.2% | 18.2% |
| Bachelor's degree | 1.8% | 24.5% |
| Graduate or professional degree | 8.3% | 8.2% |
Commute to work
How workers get to work (share)
| ZIP 21521 | ZIP 21523 | |
|---|---|---|
| Drove alone | 87.7% | 88.6% |
| Carpooled | 3.8% | 11.4% |
| Public transit | 0.0% | 0.0% |
| Walked | 0.2% | 0.0% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 3.8% | 0.0% |
| Other means | 4.5% | 0.0% |
Housing
Units in structure (share)
| ZIP 21521 | ZIP 21523 | |
|---|---|---|
| 1-unit, detached | 85.9% | 87.7% |
| 1-unit, attached | 4.8% | 0.0% |
| 2 to 4 units | 1.5% | 0.0% |
| 5 to 19 units | 1.6% | 12.3% |
| 20 or more units | 0.0% | 0.0% |
| Mobile home & other | 6.2% | 0.0% |
Poverty & households
| ZIP 21521 | ZIP 21523 | |
|---|---|---|
| Poverty rate | 11.4% | 9.1% |
| Average household size | 2.42 | 2.54 |
| Mean commute (minutes) | 29 | 22 |
| Median year structure built | 1965 | 1962 |