Clayton
- County:
- Union County
- County Seat:
- No
- Area (mi²):
- 7.619
- State:
- New Mexico
Clayton is a town located in Union County, New Mexico. Clayton has a 2026 population of 2,559. Clayton is currently declining at a rate of -1.08% annually and its population has decreased by -3.4% since the most recent census, which recorded a population of 2,649 in 2020.