La Union is a census-designated place in Doña Ana County, New Mexico, United States.

It is a part of the El Paso–Las Cruces combined statistical area.

[5] This led to the breaking of a dam, which ravaged the local infrastructure.

As a result, the county government and Governor of New Mexico Michelle Lujan Grisham announced funding on improvements on town and dam infrastructure.

[5][6] According to the U.S. Census Bureau, the community has an area of 0.979 square miles (2.54 km2), all land.