Union County, New Mexico Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Clayton12,5582,648-0.89%3287.8Town
Des Moines2111115-0.89%1280.9Village
Capulin386197.5%581.5CDP
Folsom44648-2.13%710.7Village
Grenville525240%660.4Village

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Union County, New Mexico?

Clayton is the largest city in Union County.

What is the smallest city in Union County, New Mexico?

Grenville is the smallest city in Union County.

How many cities are in Union County?

There are 5 cities in Union County, New Mexico.

Frequently Asked Questions