
The racial makeup of the county was 67.8% White, 1.6% Black or African American, 1.5% Native American, 0.8% Asian, 0.1% Pacific Islander, 24.7% from other races, and 3.6% from two or more races. There were 65,210 housing units at an average density of 17 per square mile (7/km 2). The population density was 46 people per square mile (18/km 2). Census Īs of the 2000 United States Census, there were 174,682 people, 59,556 households, and 42,939 families residing in the county. About 20.1% of families and 24.5% of the population were below the poverty line, including 34.8% of those under age 18 and 13.6% of those age 65 or over. The per capita income for the county was $18,315. Males had a median income of $33,510 versus $25,217 for females. The median income for a household in the county was $36,657 and the median income for a family was $43,184. The average household size was 2.71 and the average family size was 3.25.

Of the 75,532 households, 37.4% had children under the age of 18 living with them, 46.8% were married couples living together, 16.0% had a female householder with no husband present, 31.3% were non-families, and 24.2% of all households were made up of individuals. In terms of ancestry, 7.3% were German, and 2.2% were American.

Those of Hispanic or Latino origin made up 65.7% of the population. The racial makeup of the county was 74.1% white, 1.7% black or African American, 1.5% American Indian, 1.1% Asian, 0.1% Pacific islander, 18.5% from other races, and 3.0% from two or more races. There were 81,492 housing units at an average density of 21.4 per square mile (8.3/km 2). The population density was 55.0 inhabitants per square mile (21.2/km 2).

Other mountain ranges in the county are the Robledo Mountains, Doña Ana Mountains, Sierra de las Uvas, the southern end of the San Andres Mountains, East Potrillo Mountains, and West Potrillo Mountains, as well as two small, isolated mountains, Tortugas (or A) Mountain on the east and Picacho Peak on the west side of Las Cruces. The county contains a number of prominent geographical features, most notably the Mesilla Valley (the flood plain of the Rio Grande) going north to south through the center and the Organ Mountains along the county's eastern edge. Census Bureau, the county has a total area of 3,814 square miles (9,880 km 2), of which 3,808 square miles (9,860 km 2) is land and 6.9 square miles (18 km 2) (0.2%) is covered by water. īeing 67.3% Hispanic in 2020, Doña Ana is New Mexico's largest majority-Hispanic county. The waivers are for 27 laws including protection of endangered species, archaeological sites, and historic places.

Construction of an improved barrier on the border was expedited in 2019 with waivers of environmental and other laws. The state of Chihuahua, Mexico borders the county to the south. It borders Luna, Sierra, and Otero counties in New Mexico, and El Paso County, Texas to the east and southeast. Notably, both Doña Ana County and Coös County lie on short international borders, the former with Mexico and the latter with Canada.ĭoña Ana County consists of the Las Cruces, NM Metropolitan Statistical Area, which is also included in the El Paso–Las Cruces, TX–NM Combined Statistical Area. Doña Ana County is one of only two counties in the United States to have a diacritical mark in its name, the other being Coös County, New Hampshire. The county is named for Doña Ana Robledo, who died there in 1680 while fleeing the Pueblo Revolt. Its county seat is Las Cruces, the second-most populous municipality in New Mexico after Albuquerque, with 111,385 as of the 2020 U.S. Census, its population was 219,561, which makes it the second-most populated county in New Mexico. Doña Ana County is located in the southern part of the State of New Mexico, United States.
