US Census Data

ZIP 99123 vs ZIP 99128

A side-by-side comparison of ZIP Code 99123 and ZIP Code 99128: population, income, housing, and more.

ZIP 99123 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 99123 has the higher population (952 vs 248 in ZIP 99128). ZIP 99123 has the higher median household income ($78,942 vs $58,194 in ZIP 99128). ZIP 99128 has the higher median home value ($300,000 vs $247,700 in ZIP 99123).

Population, income & housing

ZIP 99123ZIP 99128
Population952248
Median age57.5 yrs51.0 yrs
Median household income$78,942$58,194
Median home value$247,700$300,000
Median gross rent$1,043$925
Housing units560149
Homeownership rate86.0%76.9%
Bachelor's degree or higher20.9%25.6%
Unemployment rate0.0%10.8%

Trends (ACS 5-year, 2019–2023)

ZIP 99123ZIP 99128
Population918 → 952 (+3.7%)337 → 248 (-26.4%)
Median household income$58,750 → $78,942 (+34.4%)$57,813 → $58,194 (+0.7%)
Median home value$201,700 → $247,700 (+22.8%)$171,300 → $300,000 (+75.1%)
Median gross rent$763 → $1,043 (+36.7%)$825 → $925 (+12.1%)

ZIP 99123

Population
918952
Median household income
$58,750$78,942
Median home value
$201,700$247,700
Median gross rent
$763$1,043

ZIP 99128

Population
337248
Median household income
$57,813$58,194
Median home value
$171,300$300,000
Median gross rent
$825$925

Age & race/ethnicity

Age distribution (share)

ZIP 99123ZIP 99128
Under 57.0%1.6%
5 to 1711.3%14.9%
18 to 241.6%3.2%
25 to 3412.5%8.9%
35 to 446.8%12.1%
45 to 546.9%14.1%
55 to 6420.5%25.0%
65 to 7424.9%12.9%
75 and over8.4%7.3%

Race & ethnicity (share)

ZIP 99123ZIP 99128
White (non-Hispanic)86.8%93.5%
Black or African American0.0%0.0%
American Indian & Alaska Native2.6%0.8%
Asian0.0%0.8%
Native Hawaiian & Pacific Islander0.0%0.0%
Some other race0.0%0.0%
Two or more races7.2%1.6%
Hispanic or Latino3.4%3.2%

Educational attainment (age 25+)

Share of adults 25+

ZIP 99123ZIP 99128
No high school diploma4.7%3.5%
High school graduate29.7%29.6%
Some college or associate's44.8%41.2%
Bachelor's degree8.4%18.6%
Graduate or professional degree12.5%7.0%

Commute to work

How workers get to work (share)

ZIP 99123ZIP 99128
Drove alone77.8%54.8%
Carpooled3.3%18.3%
Public transit0.0%0.0%
Walked6.6%5.2%
Bicycle0.0%0.0%
Worked from home9.0%20.0%
Other means3.3%1.7%

Housing

Units in structure (share)

ZIP 99123ZIP 99128
1-unit, detached86.4%85.9%
1-unit, attached0.0%1.3%
2 to 4 units0.0%0.0%
5 to 19 units2.1%0.0%
20 or more units0.0%0.0%
Mobile home & other11.4%12.8%

Poverty & households

ZIP 99123ZIP 99128
Poverty rate3.4%13.7%
Average household size2.192.12
Mean commute (minutes)1525
Median year structure built19741938

Full profiles

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ZIP 99123 vs ZIP 99128: Compare Population & Demographics | US Census Data