Topanga, California Zip Codes
📍 Topanga is in Los Angeles County, California with 1 zip code; the most populous is 90290.
Topanga is a USPS city name in Los Angeles County, California with a Census population of approximately 5,300 across its ZIP codes. Los Angeles County as a whole has 538 ZIP codes in this directory. Below you'll find every zip code serving Topanga with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Topanga Zip Codes
Topanga at a Glance
Topanga has 1 ZIP code in this directory: 1 standard delivery ZIP. The 1 ZIP with published Census housing data cover 5,300 residents, the largest being 90290 with 5,300 people.
The median ZIP in Topanga has a household income of $138,316 and a home value of $1,394,200, a price-to-income ratio of 10.1, far above the 6.7 California ZIP median. Median rent across these ZIPs is $3,501 a month.
72% of households in the typical Topanga ZIP own their home (statewide ZIP median 64%). 67% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 5.5%, below the 10.8% statewide ZIP median. Overall density is about 283 residents per square mile across 19 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Topanga Zip Code Map
Interactive map of Topanga, California zip codes. Click any marker for details.