ZIP 21668 vs ZIP 21678
A side-by-side comparison of ZIP Code 21668 and ZIP Code 21678: population, income, housing, and more.
ZIP 21668 and ZIP 21678 are ZIP Code areas in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 21668 has the higher population (1,973 vs 1,868 in ZIP 21678). ZIP 21668 has the higher median household income ($80,938 vs $70,167 in ZIP 21678). ZIP 21668 has the higher median home value ($349,300 vs $306,900 in ZIP 21678).
Population, income & housing
| ZIP 21668 | ZIP 21678 | |
|---|---|---|
| Population | 1,973 | 1,868 |
| Median age | 47.6 yrs | 50.1 yrs |
| Median household income | $80,938 | $70,167 |
| Median home value | $349,300 | $306,900 |
| Median gross rent | — | $2,046 |
| Housing units | 792 | 1,107 |
| Homeownership rate | 77.1% | 90.5% |
| Bachelor's degree or higher | 17.7% | 25.3% |
| Unemployment rate | 5.5% | 2.6% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21668 | ZIP 21678 | |
|---|---|---|
| Population | 1,816 → 1,973 (+8.6%) | 1,842 → 1,868 (+1.4%) |
| Median household income | $60,750 → $80,938 (+33.2%) | $55,766 → $70,167 (+25.8%) |
| Median home value | $234,700 → $349,300 (+48.8%) | $263,200 → $306,900 (+16.6%) |
| Median gross rent | $561 → $1,076 (+91.8%) | $1,341 → $2,046 (+52.6%) |
ZIP 21668
1,8161,973
$60,750$80,938
$234,700$349,300
$561$1,076
ZIP 21678
1,8421,868
$55,766$70,167
$263,200$306,900
$1,341$2,046
Age & race/ethnicity
Age distribution (share)
| ZIP 21668 | ZIP 21678 | |
|---|---|---|
| Under 5 | 2.0% | 3.0% |
| 5 to 17 | 12.8% | 9.6% |
| 18 to 24 | 11.9% | 3.2% |
| 25 to 34 | 10.9% | 9.8% |
| 35 to 44 | 10.1% | 13.5% |
| 45 to 54 | 14.4% | 15.8% |
| 55 to 64 | 20.9% | 18.1% |
| 65 to 74 | 8.8% | 19.7% |
| 75 and over | 8.3% | 7.3% |
Race & ethnicity (share)
| ZIP 21668 | ZIP 21678 | |
|---|---|---|
| White (non-Hispanic) | 92.2% | 67.9% |
| Black or African American | 4.1% | 26.8% |
| American Indian & Alaska Native | 0.0% | 0.0% |
| Asian | 0.0% | 0.5% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.7% | 0.0% |
| Two or more races | 0.9% | 3.1% |
| Hispanic or Latino | 2.0% | 1.7% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21668 | ZIP 21678 | |
|---|---|---|
| No high school diploma | 5.9% | 6.5% |
| High school graduate | 47.3% | 39.4% |
| Some college or associate's | 29.1% | 28.9% |
| Bachelor's degree | 9.7% | 15.4% |
| Graduate or professional degree | 8.0% | 9.9% |
Commute to work
How workers get to work (share)
| ZIP 21668 | ZIP 21678 | |
|---|---|---|
| Drove alone | 83.7% | 73.9% |
| Carpooled | 8.8% | 12.1% |
| Public transit | 0.0% | 2.6% |
| Walked | 0.3% | 2.0% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 7.2% | 9.3% |
| Other means | 0.0% | 0.0% |
Housing
Units in structure (share)
| ZIP 21668 | ZIP 21678 | |
|---|---|---|
| 1-unit, detached | 78.3% | 93.4% |
| 1-unit, attached | 1.0% | 0.0% |
| 2 to 4 units | 1.8% | 0.0% |
| 5 to 19 units | 1.4% | 1.0% |
| 20 or more units | 5.7% | 0.0% |
| Mobile home & other | 11.9% | 5.6% |
Poverty & households
| ZIP 21668 | ZIP 21678 | |
|---|---|---|
| Poverty rate | 12.4% | 11.2% |
| Average household size | 2.58 | 1.96 |
| Mean commute (minutes) | 37 | 27 |
| Median year structure built | 1985 | 1986 |