83420 is zip code located in Ashton, Idaho. The population is 2,630, making 83420 the largest zipcode in Ashton and the 2nd largest in Fremont County.
There are 2 public schools in 83420 with an average Homefacts rating of B+. The total crime rate for Ashton is low , and there are 2 registered sex offenders residing in the zip code 83420. Unemployment in 83420 is low.
Zip codes within Ashton include 83421.