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Zip Code 90403 — Santa Monica, CA

ZIP Code 90403 is associated with Santa Monica, CA, in Los Angeles County. The listed population estimate is 23,867; estimated density is 6,528.0 people per square mile. Among records with population estimates, it ranks #202 of 288 in Los Angeles County and #745 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (34.031640, -118.489750)

Data MetricLocal Statistic
Postal / Zip Code90403
Primary CitySanta Monica
State / ProvinceCA
CountyLos Angeles
Total Population23,867
Population Density6,528.0 people/sq mi
TimezoneAmerica/Los_Angeles

How 90403 Compares

MetricZIP 90403Los Angeles County recordsCA records
Population estimate23,8679,807,501 (sum)39,286,245 (sum)
Population Density6,528.0 /sq mi----
County population rank#202 of 288----
State population rank#745 of 1,762----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CA

ZIP CodeCityDistancePopulation estimate
ZIP 90402Santa Monica0.9 mi11,337
ZIP 90404Santa Monica1.0 mi22,978
ZIP 90401Santa Monica1.1 mi8,101
ZIP 90405Santa Monica1.8 mi27,298
ZIP 90073Los Angeles2.5 mi1,079

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 →