ZIP Code 91001

ZIP code 91001 is classified by USPS as a standard delivery area and covers roughly 21.4 square miles in Altadena, Los Angeles County, California. The area is home to 36,126 residents, producing a population density of 1,690 people per square mile, and falls within the Los Angeles time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 91001 against California and the nation.

On the economic side, the median household income for ZIP 91001 sits at $134,903 (33% above the California average), while per-capita income is $68,163. The poverty rate stands at 7.4% and the unemployment rate at 7.3%. On housing, the median home value is $1,135,200 (47% above the state average) with median rent at $2,437 per month, and 79.9% of occupied units are owner-occupied, a direct signal of whether 91001 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 53.9% of adults hold a bachelor's degree or higher, the median age is 46.3, and the average commute is 28 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Los Angeles County, so you can benchmark 91001 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →