Union County
County in New Mexico
Union County is the northeasternmost county in the U.S. state of New Mexico. As of the 2020 census, the population was 4,079, making it the fourth-least populous county in New Mexico. Its county seat is Clayton. The county was formed in 1894. Wikipedia
Cities: Clayton, Des Moines, Folsom, and more
Population: 3,980 (2022)
County seat: Clayton
Area: 3,831 mi²
Founded: 1893