Winnetka, California Zip Codes
📍 Winnetka is in Los Angeles County, California with 2 zip codes; the most populous is 91306.
Winnetka is a USPS city name in Los Angeles County, California with a Census population of approximately 49,460 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 Winnetka 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 Winnetka Zip Codes
Winnetka at a Glance
Winnetka has 2 ZIP codes in this directory: 1 standard delivery ZIP and 1 PO Box or unique ZIP that carries no resident population in Census data. The 1 ZIP with published Census housing data cover 49,460 residents, the largest being 91306 with 49,460 people.
The median ZIP in Winnetka has a household income of $82,380 and a home value of $652,600, a price-to-income ratio of 7.9, above the 6.7 California ZIP median. Median rent across these ZIPs is $1,765 a month.
56% of households in the typical Winnetka ZIP own their home (statewide ZIP median 64%). 29% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 18.9%, far above the 10.8% statewide ZIP median. Overall density is about 11,776 residents per square mile across 4 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.
Winnetka Zip Code Map
Interactive map of Winnetka, California zip codes. Click any marker for details.