ZIP 21675 vs ZIP 21678
A side-by-side comparison of ZIP Code 21675 and ZIP Code 21678: population, income, housing, and more.
ZIP 21675 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 21678 has the higher population (1,868 vs 43 in ZIP 21675). ZIP 21678 has the higher median household income ($70,167 vs $23,958 in ZIP 21675). Since 2019, ZIP 21678's population has grown faster (+1.4% vs -52.2%).
Population, income & housing
| ZIP 21675 | ZIP 21678 | |
|---|---|---|
| Population | 43 | 1,868 |
| Median age | 67.4 yrs | 50.1 yrs |
| Median household income | $23,958 | $70,167 |
| Median home value | — | $306,900 |
| Median gross rent | — | $2,046 |
| Housing units | 75 | 1,107 |
| Homeownership rate | 100.0% | 90.5% |
| Bachelor's degree or higher | 25.6% | 25.3% |
| Unemployment rate | 0.0% | 2.6% |
Trends (ACS 5-year, 2019–2023)
| ZIP 21675 | ZIP 21678 | |
|---|---|---|
| Population | 90 → 43 (-52.2%) | 1,842 → 1,868 (+1.4%) |
| Median household income | $41,250 → $23,958 (-41.9%) | $55,766 → $70,167 (+25.8%) |
| Median home value | $90,000 → $112,500 (+25.0%) | $263,200 → $306,900 (+16.6%) |
| Median gross rent | — | $1,341 → $2,046 (+52.6%) |
ZIP 21675
9043
$41,250$23,958
$90,000$112,500
ZIP 21678
1,8421,868
$55,766$70,167
$263,200$306,900
$1,341$2,046
Age & race/ethnicity
Age distribution (share)
| ZIP 21675 | ZIP 21678 | |
|---|---|---|
| Under 5 | 0.0% | 3.0% |
| 5 to 17 | 0.0% | 9.6% |
| 18 to 24 | 0.0% | 3.2% |
| 25 to 34 | 0.0% | 9.8% |
| 35 to 44 | 14.0% | 13.5% |
| 45 to 54 | 0.0% | 15.8% |
| 55 to 64 | 25.6% | 18.1% |
| 65 to 74 | 25.6% | 19.7% |
| 75 and over | 34.9% | 7.3% |
Race & ethnicity (share)
| ZIP 21675 | ZIP 21678 | |
|---|---|---|
| White (non-Hispanic) | 100.0% | 67.9% |
| Black or African American | 0.0% | 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 | 0.0% | 0.0% |
| Two or more races | 0.0% | 3.1% |
| Hispanic or Latino | 0.0% | 1.7% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 21675 | ZIP 21678 | |
|---|---|---|
| No high school diploma | 25.6% | 6.5% |
| High school graduate | 48.8% | 39.4% |
| Some college or associate's | 0.0% | 28.9% |
| Bachelor's degree | 0.0% | 15.4% |
| Graduate or professional degree | 25.6% | 9.9% |
Commute to work
How workers get to work (share)
| ZIP 21675 | ZIP 21678 | |
|---|---|---|
| Drove alone | 100.0% | 73.9% |
| Carpooled | 0.0% | 12.1% |
| Public transit | 0.0% | 2.6% |
| Walked | 0.0% | 2.0% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 0.0% | 9.3% |
| Other means | 0.0% | 0.0% |
Housing
Units in structure (share)
| ZIP 21675 | ZIP 21678 | |
|---|---|---|
| 1-unit, detached | 100.0% | 93.4% |
| 1-unit, attached | 0.0% | 0.0% |
| 2 to 4 units | 0.0% | 0.0% |
| 5 to 19 units | 0.0% | 1.0% |
| 20 or more units | 0.0% | 0.0% |
| Mobile home & other | 0.0% | 5.6% |
Poverty & households
| ZIP 21675 | ZIP 21678 | |
|---|---|---|
| Poverty rate | 23.3% | 11.2% |
| Average household size | 1.59 | 1.96 |
| Mean commute (minutes) | — | 27 |
| Median year structure built | 1941 | 1986 |