Mentone (/ˌmɛnˈtoʊn/) is a small town in Loving County, Texas. As the county's only community, it serves as the county seat and has a 2010 population of 19, almost a quarter of the county's 82 people. Mentone was until recently the least-populated unincorporated county seat in the United States, but lost that distinction with the 2010 census to Gann Valley, South Dakota, which has a population of 14. It was designated a Recorded Texas Historic Landmark in 1967 as the "Smallest County Seat in Texas".


Mentone is located at an elevation of 2,684 feet (818 m). It is situated on State Highway 302, seventy-five miles west of Odessa.


Mentone experiences an arid desert climate with hot summers and cool winters. Due to Mentone's aridity, the Diurnal temperature variation is substantial, and helps lower nighttime temperatures. Most precipitation falls in the summer and early fall.