McNary, LA has a population of 144 and is the 25,732nd largest city in the United States. The population density is 78 per sq mi which is 25% lower than the Louisiana average and 14% lower than the national average. The median age in McNary is 51 which is approximately 42% higher than the Louisiana average of 36. In McNary, 65% of the population over 15 years of age are married, 81% speak English and 2% speak Spanish. 83% of McNary residents were born in Louisiana, 8% were born out of state, 0% were born outside of the United States and 9% were foreign born.