| Official Name: | La Union, New Mexico |
| Settlement Type: | Census-designated place |
| Pushpin Map: | New Mexico |
| Pushpin Label: | La Union |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New Mexico |
| Subdivision Type2: | County |
| Subdivision Name2: | Doña Ana |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 10.73 |
| Area Land Km2: | 10.73 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 4.14 |
| Area Land Sq Mi: | 4.14 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 997 |
| Population Density Km2: | 92.93 |
| Population Density Sq Mi: | 240.70 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 3803 |
| Coordinates: | 31.9508°N -106.6622°W |
| Area Code: | 575 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 2584137 |
La Union is a census-designated place in Doña Ana County, New Mexico, United States. Its population was 1,106 as of the 2010 census.[2] NM 182 connects the community to NM 28. It is a part of the El Paso–Las Cruces combined statistical area.
In 2021, La Union was struck by torrential floods that were described as a '1000-year flooding event'.[3] 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.[4]
According to the U.S. Census Bureau, the community has an area of, all land.[2]
As of the 2020 Census, the population of La Union was 997.
La Union Elementary School is administered by Gadsden Independent School District and operates as a public school up to grade 6. The school colors are green and yellow. The school mascot is the lion. "La Union Lions" are the sports team of La Union Elementary School.