Below is a list of Cornish Flat NH zip codes. For your research we have also included Cornish Flat Area Code, Time Zone, UTC and the local Sullivan County FIPS Code. Each Cornish Flat New Hampshire zip code has a center Longitude / Latitude point (the Cornish Flat center is -72.280197143555 / 43.497200012207). For your convenience we have also indicated if that zip code in Cornish Flat observes Daylight Savings time.