03801 is zip code located in Portsmouth, New Hampshire. The population is 21,799, making 03801 the largest zipcode in Portsmouth and the 4th largest in Rockingham County.
There are 6 public schools in 03801 with an average Homefacts rating of A-. The total crime rate for Portsmouth is very low , and there are 14 registered sex offenders residing in the zip code 03801. Unemployment in 03801 is low.