Census ACS · California
ZIP Code 91770
ZIP code 91770 is located in California with a population of 58,893. The median household income is $73,757 and the median home value is $712,700.
58,893
Population
$73,757
Median Income
$712,700
Median Home Value
44.6
Median Age
Race & Ethnicity
| White | 8.0% |
| Black | 0.7% |
| Asian | 0.0% |
| Hispanic (any race) | 1.4% |
Male: 51.1% · Female: 48.9%
Economy & Income
$73,757
Median Household Income
$27,428
Per Capita Income
10.5%
Poverty Rate
Housing
$712,700
Median Home Value
$1,740
Median Rent
51.1%
Homeownership
Education
67.7%
High School+
23.1%
Bachelor's Degree+
Nearby ZIP Codes
Largest cities in California
Part of California
Metro areas in California
Frequently Asked Questions
ZIP code 91770 in California has a population of 58,893 according to latest Census ACS data.
The median household income in ZIP 91770 is $73,757. The per capita income is $27,428. The poverty rate is 10.5%.
ZIP code 91770 is located in California.
More from California
Data for ZIP Code Tabulation Area (ZCTA) 91770 from the American Community Survey 5-Year estimates. ZCTAs approximately correspond to USPS ZIP code delivery areas but are built from Census blocks and may not match exactly.
What distinguishes ZIP 91770 is density: among the most densely settled of US ZIP codes, around 9,027 people per square mile. ZIP 91770 is a ZIP code in California with a population of 58,893.
The typical household here earns about $73,757, below the US median of $78,538. The poverty rate is 10.5%, below the national 12.4%. Real estate commands a premium here — a median home value of $712,700, with typical rent around $1,740.
Roughly 23.1% of adults have a bachelor’s, below the national 35.0%.
That density explains much of the rest of the profile in ZIP 91770: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Source: U.S. Census Bureau ACS, 2026.