Las Cruces, NM has a population of 101,459 and is the 307th largest city in the United States. The population density is 1,319 per sq mi which is 7594% higher than the New Mexico average and 1356% higher than the national average. The median age in Las Cruces is 32 which is approximately 14% lower than the New Mexico average of 37. In Las Cruces, 48% of the population over 15 years of age are married, 61% speak English and 36% speak Spanish. 47% of Las Cruces residents were born in New Mexico, 41% were born out of state, 1% were born outside of the United States and 11% were foreign born.