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Zip Code 95403 — Santa Rosa, CA

ZIP Code 95403 is associated with Santa Rosa, CA, in Sonoma County. The listed population estimate is 45,806; estimated density is 821.1 people per square mile. Among records with population estimates, it ranks #2 of 36 in Sonoma County and #290 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (38.503260, -122.753580)

Data MetricLocal Statistic
Postal / Zip Code95403
Primary CitySanta Rosa
State / ProvinceCA
CountySonoma
Total Population45,806
Population Density821.1 people/sq mi
TimezoneAmerica/Los_Angeles

How 95403 Compares

MetricZIP 95403Sonoma County recordsCA records
Population estimate45,806458,793 (sum)39,286,245 (sum)
Population Density821.1 /sq mi----
County population rank#2 of 36----
State population rank#290 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 95439Fulton1.5 mi486
ZIP 95492Windsor3.7 mi27,429
ZIP 95401Santa Rosa4.3 mi36,861
ZIP 95404Santa Rosa5.9 mi37,011
ZIP 95405Santa Rosa6.4 mi22,744

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 →