Thatcher is an unincorporated community in Franklin County, Idaho, United States. Its elevation is 4,902 feet (1,494 m), and it is located at 42.4089°N -111.7269°W (42.4088106, -111.7268930). Although Thatcher is unincorporated, it has a post office, with the ZIP code of 83283;[1] the ZCTA for ZIP Code 83283 had a population of 123 at the 2000 census.[2]