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Zip Code 90740 — Seal Beach, CA

90740 is a ZIP Code associated with Seal Beach, CA, located within Orange. 90740 ranks #60 out of 88 ZIP codes in Orange County by population (and #733 out of 1,802 in CA). The area supports an estimated population of 24,254 residents across Data Pending housing units, with a population density of 846.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (33.754610, -118.071290)

Data MetricLocal Statistic
Postal / Zip Code90740
Primary CitySeal Beach
State / ProvinceCA
CountyOrange
Total Population24,254
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density846.8 people/sq mi
TimezoneAmerica/Los_Angeles

How 90740 Compares

MetricZIP 90740Orange CountyCA State Average
Population24,2543,138,331 (Total)39,286,245 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density846.8 /sq mi----
County Pop Rank#60 of 88----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 90743Surfside1.9 mi468N/A
Zip 90742Sunset Beach2.5 mi405N/A
Zip 92649Huntington Beach2.8 mi35,346N/A
Zip 90720Los Alamitos2.9 mi23,805N/A
Zip 90803Long Beach2.9 mi31,526N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →