Reserve, NM has a population of 642 and is the 18,012th largest city in the United States. The population density is 1,152 per sq mi which is 6623% higher than the New Mexico average and 1172% higher than the national average. The median age in Reserve is 41 which is approximately 10% higher than the New Mexico average of 37. In Reserve, 58% of the population over 15 years of age are married, 57% speak English and 43% speak Spanish. 64% of Reserve residents were born in New Mexico, 35% were born out of state, 0% were born outside of the United States and 0% were foreign born.