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 42.40889°N, -111.72694°W. Although Thatcher is unincorporated, it has a post office, with the ZIP code of 83283; the ZCTA for ZIP Code 83283 had a population of 123 at the 2000 census.