Zip Code 94545 — Hayward, CA

ZIP Code 94545 is associated with Hayward, CA, in Alameda County. The listed population estimate is 32,843; estimated density is 875.8 people per square mile. Among records with population estimates, it ranks #25 of 49 in Alameda County and #542 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (37.629570, -122.120480)

Data MetricLocal Statistic
Postal / Zip Code94545
Primary CityHayward
State / ProvinceCA
CountyAlameda
Total Population32,843
Population Density875.8 people/sq mi
TimezoneAmerica/Los_Angeles

How 94545 Compares

MetricZIP 94545Alameda County recordsCA records
Population estimate32,8431,668,635 (sum)39,286,245 (sum)
Population Density875.8 /sq mi----
County population rank#25 of 49----
State population rank#542 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 94580San Lorenzo3.4 mi29,420
ZIP 94544Hayward3.5 mi76,947
ZIP 94541Hayward3.6 mi67,139
ZIP 94587Union City3.8 mi67,464
ZIP 94579San Leandro4.4 mi20,017

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 →