Union County Flag

Union County

State:
New Mexico
County Seat:
Clayton

Union County's estimated 2026 population is 3,749 with a growth rate of -2.47% in the past year according to the most recent United States census data. Union County is the 31st largest county in New Mexico. The 2010 population was 4,541 and has seen a growth of -17.44% since that time.

3,749
Total Population
1
Population Density (mi²)
31
Population Rank (State)
-95 -2.47%
Annual Population Growth

Union County Population

Demographics

Economics and Income Statistics