Union County, New Mexico

  • Union County Courthouse in Clayton
  • Along the Dry Cimarron Scenic Byway in Union County
  • Summer scene at Clayton Lake State Park

Union County is on the plains of northeastern New Mexico, up against the borders of Colorado, Oklahoma and Texas. Formed in 1893, Union County contains 3,831 square miles of land and 1 square mile of water. The county seat and largest town is Clayton.

Union County has had a number of ancient artifacts discovered in the county, including the first Folsom Point (a relic of the prehistoric Clovis culture) and several dinosaur fossil quarries.

Union County is home to Capulin Volcano National Monument, Clayton Lake State Park and a good part of what was the New Mexico portion of the Dry Cimarron Scenic Byway.

Fast Facts about Union County, New Mexico
Types of Jobs:
Private Sector, wages or salary: 59%
Government Sector: 23%
Unincorporated, Self-Employed: 17%
Homemaker, Unpaid: 1%
Cost of Living Index for Union County: 83.2
Median Resident Age: 39.9 Years
2014 Estimates:
Median Household Income: $35,700
Median Home Value: $105,700
Major Industries:
Agriculture, Educational Services, Health Care, Government, Construction, Lodging & Food Services, Retail Services, Social Services, Entertainment & Recreation, Postal Service
Population Demographics: 2010
Total Population 4,549
Males 2,593
Females 1,956
Population by Age
Under 18 930
18 & over 3,619
20-24 248
25-34 655
35-49 909
50-64 893
65 & over 813
Population by Ethnicity
Hispanic or Latino 1,805
Non Hispanic or Latino 2,744
Population by Race
White 3,718
African-American 80
Asian 23
Native American 89
Hawaiian or Pacific Islander 1
Other 532
Two or more 106