Windmill is a census-designated place in Hidalgo County, New Mexico, United States. As of the 2020 census, Windmill had a population of 54. The community is located along New Mexico State Road 9.
The community was founded in the 1970s. While it is located on a windy plain, as of 1991 it did not have a windmill despite its name.
According to the U.S. Census Bureau, the community has an area of , all land.