US Census Data

ZIP 99121 vs ZIP 99129

A side-by-side comparison of ZIP Code 99121 and ZIP Code 99129: population, income, housing, and more.

ZIP 99121 and ZIP 99129 are ZIP Code areas in Washington. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

ZIP 99129 has the higher population (649 vs 325 in ZIP 99121). ZIP 99121 has the higher median household income ($80,833 vs $38,490 in ZIP 99129). ZIP 99121 has the higher median home value ($420,800 vs $169,700 in ZIP 99129).

Population, income & housing

ZIP 99121ZIP 99129
Population325649
Median age52.4 yrs55.9 yrs
Median household income$80,833$38,490
Median home value$420,800$169,700
Median gross rent$432
Housing units140405
Homeownership rate81.3%67.1%
Bachelor's degree or higher47.5%7.0%
Unemployment rate0.0%13.9%

Trends (ACS 5-year, 2019–2023)

ZIP 99121ZIP 99129
Population217 → 325 (+49.8%)746 → 649 (-13.0%)
Median household income$30,341 → $80,833 (+166.4%)$38,906 → $38,490 (-1.1%)
Median home value$204,500 → $420,800 (+105.8%)$115,600 → $169,700 (+46.8%)
Median gross rent$478 → $432 (-9.6%)

ZIP 99121

Population
217325
Median household income
$30,341$80,833
Median home value
$204,500$420,800

ZIP 99129

Population
746649
Median household income
$38,906$38,490
Median home value
$115,600$169,700
Median gross rent
$478$432

Age & race/ethnicity

Age distribution (share)

ZIP 99121ZIP 99129
Under 50.0%6.6%
5 to 179.8%9.7%
18 to 2429.2%11.1%
25 to 341.5%6.2%
35 to 440.0%10.9%
45 to 5415.4%4.8%
55 to 6420.6%22.2%
65 to 7412.0%16.2%
75 and over11.4%12.3%

Race & ethnicity (share)

ZIP 99121ZIP 99129
White (non-Hispanic)96.3%45.9%
Black or African American0.0%0.0%
American Indian & Alaska Native0.9%36.5%
Asian0.0%2.0%
Native Hawaiian & Pacific Islander0.0%0.0%
Some other race0.0%0.8%
Two or more races2.8%8.8%
Hispanic or Latino0.0%6.0%

Educational attainment (age 25+)

Share of adults 25+

ZIP 99121ZIP 99129
No high school diploma1.0%13.0%
High school graduate15.7%33.3%
Some college or associate's35.9%46.7%
Bachelor's degree13.1%2.5%
Graduate or professional degree34.3%4.5%

Commute to work

How workers get to work (share)

ZIP 99121ZIP 99129
Drove alone62.5%75.9%
Carpooled27.3%12.7%
Public transit0.0%0.0%
Walked0.0%0.0%
Bicycle0.0%0.0%
Worked from home10.2%11.4%
Other means0.0%0.0%

Housing

Units in structure (share)

ZIP 99121ZIP 99129
1-unit, detached97.9%68.9%
1-unit, attached0.0%0.7%
2 to 4 units0.0%1.7%
5 to 19 units0.0%0.0%
20 or more units0.0%0.0%
Mobile home & other2.1%28.6%

Poverty & households

ZIP 99121ZIP 99129
Poverty rate10.2%26.2%
Average household size2.902.25
Mean commute (minutes)5936
Median year structure built19941994

Full profiles

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ZIP 99121 vs ZIP 99129: Compare Population & Demographics | US Census Data