San Mateo – 94404 – Foster City – CA – 12/25
San Mateo – 94404 – Foster City – CA – 12/25
Cities: Foster City, CA (87.37%), San Mateo, CA (12.63%)
County: San Mateo County, CA
Estimated zip code population in 2011: 32,986
Zip code population in 2010: 33,749
Zip code population in 2000: 31,866