13 Spring St, Alton, NH 03810 MLS 4741798 Coldwell Banker
13 Spring St, Alton, NH 03810 MLS 4741798 Coldwell Banker . Zip code 03810 is located in southern new hampshire and covers a slightly less than average land. List of zipcodes in alton bay, new hampshire. Alton Florist Llc Alton MO florist 65606 zip from www.flowershopflorists.com Alton, nh zip code 03809 email: 1 monument square alton, nh 03809 | phone: West alton stats and demographics for the 03810 zip code.