10 Most Populated ZIP Codes in California

The top ZIP code for population in California is 92336 (Fontana, San Bernardino County), with a population of 103,393. Across the top 10 most populated ZIP codes in California, population ranges from 103,393 to 93,783, covering communities from Fontana to Pacoima.

Rank	ZIP	City	County	Population	Population
1	92336	Fontana	San Bernardino County	103,393	103,393
2	90011	Los Angeles	Los Angeles County	102,784	102,784
3	90650	Norwalk	Los Angeles County	100,808	100,808
4	94565	Pittsburg	Contra Costa County	99,933	99,933
5	91331	Pacoima	Los Angeles County	98,820	98,820
6	90044	Los Angeles	Los Angeles County	95,859	95,859
7	92335	Fontana	San Bernardino County	95,295	95,295
8	90250	Hawthorne	Los Angeles County	94,991	94,991
9	90805	Long Beach	Los Angeles County	94,631	94,631
10	90201	Bell Gardens	Los Angeles County	93,783	93,783

Methodology

Rankings are derived from the U.S. Census Bureau American Community Survey 5-Year Estimates, vintage 2019 to 2023, joined to USPS ZIP Code Tabulation Areas. We rank by population and surface the top 10 ZIP codes within California. Values reflect ZCTA-level estimates and may differ slightly from city-level figures. Compiled and reviewed by the Zip Code Near Me Data Team.

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Reviewed by Zip Code Near Me Data Team. Last verified June 13, 2026.

10 Most Populated ZIP Codes in California

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