ZIP 21917 vs ZIP 21921
A side-by-side comparison of ZIP Code 21917 and ZIP Code 21921: population, income, housing, and more.
ZIP 21917 and ZIP 21921 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 1,786 in ZIP 21917). ZIP 21917 has the higher median household income ($104,583 vs $84,608 in ZIP 21921). ZIP 21917 has the higher median home value ($362,200 vs $296,000 in ZIP 21921).
Population, income & housing
| ZIP 21917 | ZIP 21921 | |
|---|---|---|
| Population | 1,786 | 45,698 |
| Median age | 52.1 yrs | 39.1 yrs |
| Median household income | $104,583 | $84,608 |
| Median home value | $362,200 | $296,000 |
| Median gross rent | — | $1,413 |
| Housing units | 692 | 18,782 |
| Homeownership rate | 98.7% | 68.3% |
| Bachelor's degree or higher | 13.6% | 27.9% |
| Unemployment rate | 3.2% | 3.9% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21917 | ZIP 21921 | |
|---|---|---|
| Population | 2,127 → 1,786 (-16.0%) | 46,162 → 45,698 (-1.0%) |
| Median household income | $82,895 → $104,583 (+26.2%) | $72,992 → $84,608 (+15.9%) |
| Median home value | $236,000 → $362,200 (+53.5%) | $234,300 → $296,000 (+26.3%) |
| Median gross rent | $1,107 → $1,135 (+2.5%) | $1,160 → $1,413 (+21.8%) |
ZIP 21917
2,1271,786
$82,895$104,583
$236,000$362,200
$1,107$1,135
ZIP 21921
46,16245,698
$72,992$84,608
$234,300$296,000
$1,160$1,413
Age & race/ethnicity
Age distribution (share)
| ZIP 21917 | ZIP 21921 | |
|---|---|---|
| Under 5 | 6.4% | 6.0% |
| 5 to 17 | 8.9% | 17.0% |
| 18 to 24 | 7.5% | 7.2% |
| 25 to 34 | 12.0% | 15.1% |
| 35 to 44 | 10.6% | 11.6% |
| 45 to 54 | 12.2% | 12.4% |
| 55 to 64 | 25.5% | 14.6% |
| 65 to 74 | 11.5% | 10.2% |
| 75 and over | 5.5% | 5.9% |
Race & ethnicity (share)
| ZIP 21917 | ZIP 21921 | |
|---|---|---|
| White (non-Hispanic) | 91.8% | 75.8% |
| Black or African American | 1.9% | 9.4% |
| American Indian & Alaska Native | 0.0% | 0.1% |
| Asian | 0.0% | 1.7% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.1% |
| Some other race | 0.0% | 0.8% |
| Two or more races | 1.1% | 5.8% |
| Hispanic or Latino | 5.2% | 6.4% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21917 | ZIP 21921 | |
|---|---|---|
| No high school diploma | 4.1% | 7.7% |
| High school graduate | 47.6% | 37.8% |
| Some college or associate's | 34.7% | 26.6% |
| Bachelor's degree | 6.4% | 18.3% |
| Graduate or professional degree | 7.2% | 9.6% |
Commute to work
How workers get to work (share)
| ZIP 21917 | ZIP 21921 | |
|---|---|---|
| Drove alone | 76.5% | 77.2% |
| Carpooled | 11.9% | 10.4% |
| Public transit | 0.0% | 0.8% |
| Walked | 0.0% | 1.4% |
| Bicycle | 0.0% | 0.2% |
| Worked from home | 10.7% | 8.8% |
| Other means | 0.8% | 1.2% |
Housing
Units in structure (share)
| ZIP 21917 | ZIP 21921 | |
|---|---|---|
| 1-unit, detached | 100.0% | 66.0% |
| 1-unit, attached | 0.0% | 11.2% |
| 2 to 4 units | 0.0% | 6.1% |
| 5 to 19 units | 0.0% | 8.3% |
| 20 or more units | 0.0% | 3.6% |
| Mobile home & other | 0.0% | 4.7% |
Poverty & households
| ZIP 21917 | ZIP 21921 | |
|---|---|---|
| Poverty rate | 5.5% | 13.6% |
| Average household size | 2.52 | 2.56 |
| Mean commute (minutes) | 36 | 28 |
| Median year structure built | 1986 | 1987 |