ZIP 99031 vs ZIP 99040
A side-by-side comparison of ZIP Code 99031 and ZIP Code 99040: population, income, housing, and more.
ZIP 99031 and ZIP 99040 are ZIP Code areas in Washington. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
ZIP 99031 has the higher population (1,434 vs 535 in ZIP 99040). ZIP 99031 has the higher median household income ($95,089 vs $57,500 in ZIP 99040). ZIP 99031 has the higher median home value ($330,100 vs $180,800 in ZIP 99040).
Population, income & housing
| ZIP 99031 | ZIP 99040 | |
|---|---|---|
| Population | 1,434 | 535 |
| Median age | 49.2 yrs | 51.3 yrs |
| Median household income | $95,089 | $57,500 |
| Median home value | $330,100 | $180,800 |
| Median gross rent | $688 | $421 |
| Housing units | 510 | 289 |
| Homeownership rate | 88.6% | 70.6% |
| Bachelor's degree or higher | 23.9% | 29.6% |
| Unemployment rate | 6.7% | 5.6% |
Trends (ACS 5-year, 2019–2023)
| ZIP 99031 | ZIP 99040 | |
|---|---|---|
| Population | 1,405 → 1,434 (+2.1%) | 719 → 535 (-25.6%) |
| Median household income | $75,375 → $95,089 (+26.2%) | $28,080 → $57,500 (+104.8%) |
| Median home value | $244,000 → $330,100 (+35.3%) | $100,000 → $180,800 (+80.8%) |
| Median gross rent | $639 → $688 (+7.7%) | $458 → $421 (-8.1%) |
ZIP 99031
1,4051,434
$75,375$95,089
$244,000$330,100
$639$688
ZIP 99040
719535
$28,080$57,500
$100,000$180,800
$458$421
Age & race/ethnicity
Age distribution (share)
| ZIP 99031 | ZIP 99040 | |
|---|---|---|
| Under 5 | 3.6% | 2.1% |
| 5 to 17 | 8.2% | 10.7% |
| 18 to 24 | 5.5% | 9.0% |
| 25 to 34 | 13.1% | 12.7% |
| 35 to 44 | 12.6% | 8.0% |
| 45 to 54 | 17.6% | 13.8% |
| 55 to 64 | 23.4% | 17.4% |
| 65 to 74 | 9.2% | 12.9% |
| 75 and over | 6.6% | 13.5% |
Race & ethnicity (share)
| ZIP 99031 | ZIP 99040 | |
|---|---|---|
| White (non-Hispanic) | 90.0% | 17.6% |
| Black or African American | 0.0% | 0.0% |
| American Indian & Alaska Native | 0.0% | 80.6% |
| Asian | 1.3% | 0.0% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 1.3% | 0.0% |
| Two or more races | 3.6% | 1.9% |
| Hispanic or Latino | 4.0% | 0.0% |
Educational attainment (age 25+)
Share of adults 25+
| ZIP 99031 | ZIP 99040 | |
|---|---|---|
| No high school diploma | 2.5% | 8.4% |
| High school graduate | 28.1% | 28.6% |
| Some college or associate's | 45.5% | 33.4% |
| Bachelor's degree | 17.1% | 14.8% |
| Graduate or professional degree | 6.8% | 14.8% |
Commute to work
How workers get to work (share)
| ZIP 99031 | ZIP 99040 | |
|---|---|---|
| Drove alone | 68.5% | 83.3% |
| Carpooled | 15.6% | 0.0% |
| Public transit | 0.0% | 0.0% |
| Walked | 7.0% | 14.1% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 5.8% | 2.6% |
| Other means | 3.1% | 0.0% |
Housing
Units in structure (share)
| ZIP 99031 | ZIP 99040 | |
|---|---|---|
| 1-unit, detached | 65.7% | 58.1% |
| 1-unit, attached | 0.0% | 2.1% |
| 2 to 4 units | 2.0% | 4.2% |
| 5 to 19 units | 0.0% | 0.0% |
| 20 or more units | 0.0% | 0.0% |
| Mobile home & other | 32.4% | 35.6% |
Poverty & households
| ZIP 99031 | ZIP 99040 | |
|---|---|---|
| Poverty rate | 15.6% | 24.0% |
| Average household size | 2.60 | 2.03 |
| Mean commute (minutes) | 27 | 16 |
| Median year structure built | 1980 | 1995 |