52320 is zip code located in Olin, Iowa. The population is 1,215, making 52320 the largest zipcode in Olin and the 4th largest in Jones County.
There are 1 public schools in 52320 with an average Homefacts rating of B. , and there are 7 registered sex offenders residing in the zip code 52320. Unemployment in 52320 is low.