Contra Costa County – 94518 – Concord – CA – 4/35
Contra Costa County – 94518 – Concord – CA – 4/35
Cities: Concord, CA (92.66%), Walnut Creek, CA (6.81%), Pleasant Hill, CA (0.53%)
County: Contra Costa County, CA
Estimated zip code population in 2011: 26,322
Zip code population in 2010: 26,778
Zip code population in 2000: 27,392