County
· New Mexico
Union County
Union County is the easternmost 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. Union County borders Colorado to the north, and Oklahoma and Texas to the east.
4,107 population
(2021)
·
County area: Union
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Cities and towns 4
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 170377
- FIPS state
- 35
- FIPS county
- 059
- FIPS place
- 99059
- Census record name
- COUNTY OF UNION
- Mailing address
- PO BOX 430, CLAYTON 88415