Welcome! Doña Ana County is one of 33 counties in the state of New Mexico. It was created in 1852 and is the second most populated county in the state. The county seat, Las Cruces, has been ranked as one of the fastest-growing communities in the United States for the past decade. Doña Ana County's 635 employees are proud participants in the national Character Counts! initiative to promote ethics in the workplace.
The quality of life in the county is characterized by a strong sense of community that is enhanced by a rural lifestyle. Assets identified by residents include peace and quiet, friendliness of the people, wonderful local produce and foods, and terrific weather in a rural setting where you can still see the stars.
The County comprises 3,804 square miles in south-central New Mexico, bordering on El Paso County, Texas, to the east and southeast and the state of Chihuahua, Mexico, directly to the south, as well as Luna County to the west, Sierra County to the north and Otero County to the east. There are many physically diverse areas within Doña Ana, including mountain ranges, valleys and deserts.