94521 is zip code located in Concord, California. The population is 40,854, making 94521 the largest zipcode in Concord and the 7th largest in Contra Costa County.
There are 11 public schools in 94521 with an average Homefacts rating of B+. The total crime rate for Concord is moderate , and there are 32 registered sex offenders residing in the zip code 94521. Unemployment in 94521 is moderate.