94531 is zip code located in Antioch, California. The population is 41,237, making 94531 the 2nd largest zipcode in Antioch and the 6th largest in Contra Costa County.
There are 9 public schools in 94531 with an average Homefacts rating of B-. The total crime rate for Antioch is high , and there are 49 registered sex offenders residing in the zip code 94531. Unemployment in 94531 is very high.
Zip codes within Antioch include 94509.