US Census Data

ZIP 99131 vs ZIP 99135

A side-by-side comparison of ZIP Code 99131 and ZIP Code 99135: population, income, housing, and more.

ZIP 99131 and ZIP 99135 are ZIP Code areas in Washington. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

ZIP 99135 has the higher population (441 vs 137 in ZIP 99131). ZIP 99135 has the higher median household income ($86,667 vs $36,055 in ZIP 99131). ZIP 99131 has the higher median home value ($255,000 vs $198,000 in ZIP 99135).

Population, income & housing

ZIP 99131ZIP 99135
Population137441
Median age70.3 yrs35.5 yrs
Median household income$36,055$86,667
Median home value$255,000$198,000
Median gross rent$456
Housing units138211
Homeownership rate63.9%91.3%
Bachelor's degree or higher5.9%21.7%
Unemployment rate0.0%0.0%

Trends (ACS 5-year, 2019–2023)

ZIP 99131ZIP 99135
Population176 → 137 (-22.2%)301 → 441 (+46.5%)
Median household income$62,188 → $36,055 (-42.0%)$73,188 → $86,667 (+18.4%)
Median home value$238,500 → $255,000 (+6.9%)$160,700 → $198,000 (+23.2%)
Median gross rent$600 → $456 (-24.0%)

ZIP 99131

Population
176137
Median household income
$62,188$36,055
Median home value
$238,500$255,000

ZIP 99135

Population
301441
Median household income
$73,188$86,667
Median home value
$160,700$198,000
Median gross rent
$600$456

Age & race/ethnicity

Age distribution (share)

ZIP 99131ZIP 99135
Under 50.0%2.7%
5 to 171.5%24.7%
18 to 240.0%9.8%
25 to 341.5%10.7%
35 to 442.2%9.3%
45 to 546.6%7.0%
55 to 648.8%11.8%
65 to 7460.6%19.5%
75 and over19.0%4.5%

Race & ethnicity (share)

ZIP 99131ZIP 99135
White (non-Hispanic)99.3%95.7%
Black or African American0.0%0.0%
American Indian & Alaska Native0.0%0.0%
Asian0.0%0.0%
Native Hawaiian & Pacific Islander0.0%0.0%
Some other race0.0%0.0%
Two or more races0.7%3.6%
Hispanic or Latino0.0%0.7%

Educational attainment (age 25+)

Share of adults 25+

ZIP 99131ZIP 99135
No high school diploma2.2%7.6%
High school graduate44.4%30.0%
Some college or associate's47.4%40.8%
Bachelor's degree0.0%10.8%
Graduate or professional degree5.9%10.8%

Commute to work

How workers get to work (share)

ZIP 99131ZIP 99135
Drove alone80.0%54.7%
Carpooled0.0%11.7%
Public transit0.0%1.1%
Walked20.0%2.2%
Bicycle0.0%0.0%
Worked from home0.0%30.2%
Other means0.0%0.0%

Housing

Units in structure (share)

ZIP 99131ZIP 99135
1-unit, detached65.2%97.6%
1-unit, attached7.2%0.5%
2 to 4 units0.0%0.0%
5 to 19 units0.0%0.0%
20 or more units0.0%0.0%
Mobile home & other27.5%1.9%

Poverty & households

ZIP 99131ZIP 99135
Poverty rate19.7%2.7%
Average household size1.412.40
Mean commute (minutes)34
Median year structure built19951938

Full profiles

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