Alameda County – 94544 – Hayward – CA – 25/46
Alameda County – 94544 – Hayward – CA – 25/46
Cities: Hayward, CA (87.43%), Union City, CA (2.35%)
County: Alameda County, CA
Estimated zip code population in 2011: 74,499
Zip code population in 2010: 73,026
Zip code population in 2000: 72,984