New Mexico Union County Public Libraries

By | December 31, 2022

We are providing a comprehensive directory of public libraries in Union County, New Mexico. This list includes library formal name, street address, postal code, phone number and how many books are available. Check the following list to see all public libraries in New Mexico Union County.

Street Address: 17 Chestnut Street, Clayton, NM 88415
Phone Number: (505) 374-9423 Union 12,936 10,585

Street Address: 17 Chestnut Street, Clayton, NM 88415
Phone Number: (505) 374-9423 Union N/A N/A

Overview of Union County, New Mexico

Union County is a county located in the state of New Mexico. As of 2000, the population is 4,174. Its county seat is Clayton.


According to the U.S. Census Bureau, the county has a total area of 9,922 km² (3,831 mi²). 9,920 km² (3,830 mi²) of it is land and 2 km² (1 mi²) of it is water. The total area is 0.02% water.

Adjacent counties

  • Las Animas County, Colorado (north)
  • Baca County, Colorado (northeast)
  • Cimarron County, Oklahoma (east)
  • Dallam County, Texas (east)
  • Hartley County, Texas (southeast)
  • Quay County, New Mexico (south)
  • Harding County, New Mexico (south)
  • Colfax County, New Mexico (west)


As of the census of 2000, there are 4,174 people, 1,733 households, and 1,176 families residing in the county. The population density is 0/km² (1/mi²). There are 2,225 housing units at an average density of 0/km² (1/mi²). The racial makeup of the county is 80.38% White, 0.00% Black or African American, 0.96% Native American, 0.34% Asian, 0.12% Pacific Islander, 16.00% from other races, and 2.20% from two or more races. 35.10% of the population are Hispanic or Latino of any race.

There are 1,733 households out of which 31.10% have children under the age of 18 living with them, 54.70% are married couples living together, 9.10% have a female householder with no husband present, and 32.10% are non-families. 30.00% of all households are made up of individuals and 14.90% have someone living alone who is 65 years of age or older. The average household size is 2.40 and the average family size is 2.99.

In the county the population is spread out with 27.30% under the age of 18, 6.30% from 18 to 24, 24.60% from 25 to 44, 24.10% from 45 to 64, and 17.80% who are 65 years of age or older. The median age is 40 years. For every 100 females there are 97.00 males. For every 100 females age 18 and over, there are 96.30 males.

The median income for a household in the county is $28,080, and the median income for a family is $35,313. Males have a median income of $26,364 versus $18,711 for females. The per capita income for the county is $14,700. 18.10% of the population and 14.20% of families are below the poverty line. Out of the total population, 31.40% of those under the age of 18 and 8.30% of those 65 and older are living below the poverty line.

Cities and towns

According to countryaah, Union County, New Mexico has the following cities and towns:

  • Clayton
  • Des Moines
  • Folsom
  • Grenville

Map of Union County New Mexico