Zip Area Code

Thornton, New Hampshire

Thornton, New Hampshire, in Grafton County, has ZIP code 03285 and area code 603.

ZIP code
03285
Area code
603
Time zone
Eastern Time
Coordinates
43.9050, -71.6470

ZIP codes in Thornton

ZIP codePost officeCountyArea codes
03285ThorntonGrafton County603

Area code for Thornton

  • Area code 603

    In service since 1947. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Time zone

Thornton is in the Eastern Time zone.

Towns near Thornton