94503 is zip code located in American Canyon, California. The population is 19,494, making 94503 the largest zipcode in American Canyon and the 3rd largest in Napa County.
There are 3 public schools in 94503 with an average Homefacts rating of B-. The total crime rate for American Canyon is low , and there are 19 registered sex offenders residing in the zip code 94503. Unemployment in 94503 is low.