Whitefield is a town in Coös County, New Hampshire, United States, in the White Mountains Region. The population was 2,490 at the 2020 census. Situated on the northern edge of the White Mountains, Whitefield is home to the Mount Washington Regional Airport and the White Mountains Regional High School.

Coös County or Coos County is a county in the U.S. state of New Hampshire. As of the 2020 census, the population was 31,268, making it the least-populated county in the state. The county seat is Lancaster.