03820 is zip code located in Dover, New Hampshire. The population is 30,041, making 03820 the largest zipcode in Dover and the largest in Strafford County.
There are 7 public schools in 03820 with an average Homefacts rating of B-. The total crime rate for Dover is low , and there are 37 registered sex offenders residing in the zip code 03820. Unemployment in 03820 is low.