ZIP 99121 vs ZIP 99128
A side-by-side comparison of ZIP Code 99121 and ZIP Code 99128: population, income, housing, and more.
ZIP 99121 and ZIP 99128 are ZIP Code areas in Washington. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 99121 has the higher population (325 vs 248 in ZIP 99128). ZIP 99121 has the higher median household income ($80,833 vs $58,194 in ZIP 99128). ZIP 99121 has the higher median home value ($420,800 vs $300,000 in ZIP 99128).
Population, income & housing
| ZIP 99121 | ZIP 99128 | |
|---|---|---|
| Population | 325 | 248 |
| Median age | 52.4 yrs | 51.0 yrs |
| Median household income | $80,833 | $58,194 |
| Median home value | $420,800 | $300,000 |
| Median gross rent | — | $925 |
| Housing units | 140 | 149 |
| Homeownership rate | 81.3% | 76.9% |
| Bachelor's degree or higher | 47.5% | 25.6% |
| Unemployment rate | 0.0% | 10.8% |
Trends (ACS 5-year, 2019–2023)
| ZIP 99121 | ZIP 99128 | |
|---|---|---|
| Population | 217 → 325 (+49.8%) | 337 → 248 (-26.4%) |
| Median household income | $30,341 → $80,833 (+166.4%) | $57,813 → $58,194 (+0.7%) |
| Median home value | $204,500 → $420,800 (+105.8%) | $171,300 → $300,000 (+75.1%) |
| Median gross rent | — | $825 → $925 (+12.1%) |
ZIP 99121
217325
$30,341$80,833
$204,500$420,800
ZIP 99128
337248
$57,813$58,194
$171,300$300,000
$825$925
Age & race/ethnicity
Age distribution (share)
| ZIP 99121 | ZIP 99128 | |
|---|---|---|
| Under 5 | 0.0% | 1.6% |
| 5 to 17 | 9.8% | 14.9% |
| 18 to 24 | 29.2% | 3.2% |
| 25 to 34 | 1.5% | 8.9% |
| 35 to 44 | 0.0% | 12.1% |
| 45 to 54 | 15.4% | 14.1% |
| 55 to 64 | 20.6% | 25.0% |
| 65 to 74 | 12.0% | 12.9% |
| 75 and over | 11.4% | 7.3% |
Race & ethnicity (share)
| ZIP 99121 | ZIP 99128 | |
|---|---|---|
| White (non-Hispanic) | 96.3% | 93.5% |
| Black or African American | 0.0% | 0.0% |
| American Indian & Alaska Native | 0.9% | 0.8% |
| Asian | 0.0% | 0.8% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.0% | 0.0% |
| Two or more races | 2.8% | 1.6% |
| Hispanic or Latino | 0.0% | 3.2% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 99121 | ZIP 99128 | |
|---|---|---|
| No high school diploma | 1.0% | 3.5% |
| High school graduate | 15.7% | 29.6% |
| Some college or associate's | 35.9% | 41.2% |
| Bachelor's degree | 13.1% | 18.6% |
| Graduate or professional degree | 34.3% | 7.0% |
Commute to work
How workers get to work (share)
| ZIP 99121 | ZIP 99128 | |
|---|---|---|
| Drove alone | 62.5% | 54.8% |
| Carpooled | 27.3% | 18.3% |
| Public transit | 0.0% | 0.0% |
| Walked | 0.0% | 5.2% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 10.2% | 20.0% |
| Other means | 0.0% | 1.7% |
Housing
Units in structure (share)
| ZIP 99121 | ZIP 99128 | |
|---|---|---|
| 1-unit, detached | 97.9% | 85.9% |
| 1-unit, attached | 0.0% | 1.3% |
| 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 | 2.1% | 12.8% |
Poverty & households
| ZIP 99121 | ZIP 99128 | |
|---|---|---|
| Poverty rate | 10.2% | 13.7% |
| Average household size | 2.90 | 2.12 |
| Mean commute (minutes) | 59 | 25 |
| Median year structure built | 1994 | 1938 |