ZIP 21657 vs ZIP 21666
A side-by-side comparison of ZIP Code 21657 and ZIP Code 21666: population, income, housing, and more.
ZIP 21657 and ZIP 21666 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21666 has the higher population (14,205 vs 1,533 in ZIP 21657). ZIP 21666 has the higher median household income ($130,426 vs $106,588 in ZIP 21657). ZIP 21666 has the higher median home value ($478,500 vs $354,400 in ZIP 21657).
Population, income & housing
| ZIP 21657 | ZIP 21666 | |
|---|---|---|
| Population | 1,533 | 14,205 |
| Median age | 49.2 yrs | 46.4 yrs |
| Median household income | $106,588 | $130,426 |
| Median home value | $354,400 | $478,500 |
| Median gross rent | $1,750 | $1,755 |
| Housing units | 558 | 5,781 |
| Homeownership rate | 85.0% | 81.4% |
| Bachelor's degree or higher | 21.7% | 42.3% |
| Unemployment rate | 1.7% | 4.6% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21657 | ZIP 21666 | |
|---|---|---|
| Population | 910 → 1,533 (+68.5%) | 12,836 → 14,205 (+10.7%) |
| Median household income | $111,250 → $106,588 (-4.2%) | $103,241 → $130,426 (+26.3%) |
| Median home value | $297,600 → $354,400 (+19.1%) | $375,500 → $478,500 (+27.4%) |
| Median gross rent | $1,775 → $1,750 (-1.4%) | $1,539 → $1,755 (+14.0%) |
ZIP 21657
9101,533
$111,250$106,588
$297,600$354,400
$1,775$1,750
ZIP 21666
12,83614,205
$103,241$130,426
$375,500$478,500
$1,539$1,755
Age & race/ethnicity
Age distribution (share)
| ZIP 21657 | ZIP 21666 | |
|---|---|---|
| Under 5 | 4.9% | 4.5% |
| 5 to 17 | 16.9% | 16.5% |
| 18 to 24 | 7.8% | 7.2% |
| 25 to 34 | 8.3% | 10.4% |
| 35 to 44 | 11.1% | 9.6% |
| 45 to 54 | 8.9% | 14.8% |
| 55 to 64 | 11.2% | 14.9% |
| 65 to 74 | 25.4% | 13.3% |
| 75 and over | 5.5% | 8.8% |
Race & ethnicity (share)
| ZIP 21657 | ZIP 21666 | |
|---|---|---|
| White (non-Hispanic) | 72.5% | 87.9% |
| Black or African American | 9.0% | 3.6% |
| American Indian & Alaska Native | 0.2% | 0.0% |
| Asian | 0.7% | 1.7% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.0% | 0.2% |
| Two or more races | 5.1% | 5.0% |
| Hispanic or Latino | 12.6% | 1.8% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21657 | ZIP 21666 | |
|---|---|---|
| No high school diploma | 23.2% | 5.2% |
| High school graduate | 25.2% | 23.1% |
| Some college or associate's | 29.9% | 29.4% |
| Bachelor's degree | 14.8% | 25.9% |
| Graduate or professional degree | 6.9% | 16.4% |
Commute to work
How workers get to work (share)
| ZIP 21657 | ZIP 21666 | |
|---|---|---|
| Drove alone | 81.8% | 79.0% |
| Carpooled | 10.6% | 5.0% |
| Public transit | 0.8% | 0.1% |
| Walked | 0.0% | 0.5% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 6.8% | 14.8% |
| Other means | 0.0% | 0.6% |
Housing
Units in structure (share)
| ZIP 21657 | ZIP 21666 | |
|---|---|---|
| 1-unit, detached | 95.0% | 85.0% |
| 1-unit, attached | 0.0% | 6.7% |
| 2 to 4 units | 1.8% | 1.6% |
| 5 to 19 units | 0.9% | 4.5% |
| 20 or more units | 0.0% | 1.4% |
| Mobile home & other | 2.3% | 0.7% |
Poverty & households
| ZIP 21657 | ZIP 21666 | |
|---|---|---|
| Poverty rate | 7.3% | 4.2% |
| Average household size | 2.83 | 2.57 |
| Mean commute (minutes) | 38 | 31 |
| Median year structure built | 1975 | 1987 |