Olla, LA has a population of 1,306 and is the 13,492nd largest city in the United States. The population density is 332 per sq mi which is 217% higher than the Louisiana average and 266% higher than the national average. The median age in Olla is 36 which is approximately equal to the Louisiana average of 36. In Olla, 69% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 83% of Olla residents were born in Louisiana, 16% were born out of state, 0% were born outside of the United States and 0% were foreign born.