ZIP 21821 vs ZIP 21829
A side-by-side comparison of ZIP Code 21821 and ZIP Code 21829: population, income, housing, and more.
ZIP 21821 and ZIP 21829 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21821 has the higher population (736 vs 259 in ZIP 21829). ZIP 21829 has the higher median household income ($155,676 vs $51,500 in ZIP 21821). ZIP 21829 has the higher median home value ($183,300 vs $151,700 in ZIP 21821).
Population, income & housing
| ZIP 21821 | ZIP 21829 | |
|---|---|---|
| Population | 736 | 259 |
| Median age | 56.5 yrs | 64.5 yrs |
| Median household income | $51,500 | $155,676 |
| Median home value | $151,700 | $183,300 |
| Median gross rent | $1,356 | — |
| Housing units | 695 | 216 |
| Homeownership rate | 89.8% | 91.8% |
| Bachelor's degree or higher | 8.4% | 33.6% |
| Unemployment rate | 1.9% | 21.4% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21821 | ZIP 21829 | |
|---|---|---|
| Population | 871 → 736 (-15.5%) | 401 → 259 (-35.4%) |
| Median household income | $37,314 → $51,500 (+38.0%) | $74,837 → $155,676 (+108.0%) |
| Median home value | $160,200 → $151,700 (-5.3%) | $170,800 → $183,300 (+7.3%) |
| Median gross rent | $860 → $1,356 (+57.7%) | — |
ZIP 21821
871736
$37,314$51,500
$160,200$151,700
$860$1,356
ZIP 21829
401259
$74,837$155,676
$170,800$183,300
Age & race/ethnicity
Age distribution (share)
| ZIP 21821 | ZIP 21829 | |
|---|---|---|
| Under 5 | 1.2% | 0.0% |
| 5 to 17 | 9.4% | 4.6% |
| 18 to 24 | 3.3% | 2.3% |
| 25 to 34 | 8.3% | 0.0% |
| 35 to 44 | 22.1% | 9.3% |
| 45 to 54 | 3.4% | 5.4% |
| 55 to 64 | 21.9% | 40.2% |
| 65 to 74 | 15.6% | 27.8% |
| 75 and over | 14.8% | 10.4% |
Race & ethnicity (share)
| ZIP 21821 | ZIP 21829 | |
|---|---|---|
| White (non-Hispanic) | 90.9% | 100.0% |
| Black or African American | 4.3% | 0.0% |
| American Indian & Alaska Native | 0.0% | 0.0% |
| Asian | 0.0% | 0.0% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.0% | 0.0% |
| Two or more races | 0.3% | 0.0% |
| Hispanic or Latino | 4.5% | 0.0% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21821 | ZIP 21829 | |
|---|---|---|
| No high school diploma | 13.9% | 0.0% |
| High school graduate | 34.7% | 33.2% |
| Some college or associate's | 43.1% | 33.2% |
| Bachelor's degree | 6.6% | 33.6% |
| Graduate or professional degree | 1.7% | 0.0% |
Commute to work
How workers get to work (share)
| ZIP 21821 | ZIP 21829 | |
|---|---|---|
| Drove alone | 44.5% | 82.5% |
| Carpooled | 44.9% | 0.0% |
| Public transit | 0.0% | 0.0% |
| Walked | 1.0% | 0.0% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 8.0% | 7.8% |
| Other means | 1.7% | 9.7% |
Housing
Units in structure (share)
| ZIP 21821 | ZIP 21829 | |
|---|---|---|
| 1-unit, detached | 87.3% | 100.0% |
| 1-unit, attached | 2.2% | 0.0% |
| 2 to 4 units | 0.0% | 0.0% |
| 5 to 19 units | 0.0% | 0.0% |
| 20 or more units | 0.0% | 0.0% |
| Mobile home & other | 10.5% | 0.0% |
Poverty & households
| ZIP 21821 | ZIP 21829 | |
|---|---|---|
| Poverty rate | 15.4% | 5.4% |
| Average household size | 2.15 | 1.77 |
| Mean commute (minutes) | 29 | 16 |
| Median year structure built | 1965 | 1938 |