Ossun, LA has a population of 1,960 and is the 11,139th largest city in the United States. The population density is 577 per sq mi which is 551% higher than the Louisiana average and 537% higher than the national average. The median age in Ossun is 29 which is approximately 21% lower than the Louisiana average of 36. In Ossun, 51% of the population over 15 years of age are married, 87% speak English and 2% speak Spanish. 85% of Ossun residents were born in Louisiana, 13% were born out of state, 1% were born outside of the United States and 1% were foreign born.