US Census Data

ZIP 94121 vs ZIP 94131

A side-by-side comparison of ZIP Code 94121 and ZIP Code 94131: population, income, housing, and more.

ZIP 94121 and ZIP 94131 are ZIP Code areas in California. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

ZIP 94121 has the higher population (42,987 vs 27,809 in ZIP 94131). ZIP 94131 has the higher median household income ($198,779 vs $138,353 in ZIP 94121). ZIP 94131 has the higher median home value ($1,749,500 vs $1,634,600 in ZIP 94121).

Population, income & housing

ZIP 94121ZIP 94131
Population42,98727,809
Median age43.7 yrs40.9 yrs
Median household income$138,353$198,779
Median home value$1,634,600$1,749,500
Median gross rent$2,327$2,971
Housing units19,74213,755
Homeownership rate43.0%54.0%
Bachelor's degree or higher63.9%77.6%
Unemployment rate4.8%2.8%

Trends (ACS 5-year, 2019–2023)

ZIP 94121ZIP 94131
Population43,616 → 42,987 (-1.4%)29,523 → 27,809 (-5.8%)
Median household income$103,151 → $138,353 (+34.1%)$151,607 → $198,779 (+31.1%)
Median home value$1,241,600 → $1,634,600 (+31.7%)$1,273,400 → $1,749,500 (+37.4%)
Median gross rent$1,904 → $2,327 (+22.2%)$2,298 → $2,971 (+29.3%)

ZIP 94121

Population
43,61642,987
Median household income
$103,151$138,353
Median home value
$1,241,600$1,634,600
Median gross rent
$1,904$2,327

ZIP 94131

Population
29,52327,809
Median household income
$151,607$198,779
Median home value
$1,273,400$1,749,500
Median gross rent
$2,298$2,971

Age & race/ethnicity

Age distribution (share)

ZIP 94121ZIP 94131
Under 55.0%4.4%
5 to 1711.1%11.0%
18 to 244.7%5.9%
25 to 3415.7%17.5%
35 to 4414.9%17.3%
45 to 5413.8%13.5%
55 to 6413.7%14.3%
65 to 7411.8%9.1%
75 and over9.3%7.0%

Race & ethnicity (share)

ZIP 94121ZIP 94131
White (non-Hispanic)40.6%51.5%
Black or African American2.1%3.7%
American Indian & Alaska Native0.2%0.1%
Asian41.7%23.0%
Native Hawaiian & Pacific Islander0.0%0.1%
Some other race0.8%0.5%
Two or more races6.3%7.9%
Hispanic or Latino8.4%13.2%

Educational attainment (age 25+)

Share of adults 25+

ZIP 94121ZIP 94131
No high school diploma8.5%2.4%
High school graduate8.6%6.2%
Some college or associate's19.0%13.8%
Bachelor's degree38.6%36.7%
Graduate or professional degree25.4%40.9%

Commute to work

How workers get to work (share)

ZIP 94121ZIP 94131
Drove alone35.1%32.7%
Carpooled8.4%5.0%
Public transit18.0%17.9%
Walked4.0%2.6%
Bicycle2.4%1.9%
Worked from home29.5%37.0%
Other means2.6%2.9%

Housing

Units in structure (share)

ZIP 94121ZIP 94131
1-unit, detached19.9%33.9%
1-unit, attached16.2%16.7%
2 to 4 units37.3%18.5%
5 to 19 units21.4%17.3%
20 or more units5.2%13.1%
Mobile home & other0.0%0.5%

Poverty & households

ZIP 94121ZIP 94131
Poverty rate8.3%6.0%
Average household size2.342.19
Mean commute (minutes)3333
Median year structure built19381962

Full profiles

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ZIP 94121 vs ZIP 94131: Compare Population & Demographics | US Census Data