Alamogordo, NM has a population of 31,201 and is the 1,362nd largest city in the United States. The population density is 1,456 per sq mi which is 8393% higher than the New Mexico average and 1507% higher than the national average. The median age in Alamogordo is 36 which is approximately 3% lower than the New Mexico average of 37. In Alamogordo, 54% of the population over 15 years of age are married, 78% speak English and 14% speak Spanish. 38% of Alamogordo residents were born in New Mexico, 50% were born out of state, 2% were born outside of the United States and 10% were foreign born.