Olla, LA has a population of 1,363 and is the 13,251st largest city in the United States. The population density is 347 per sq mi which is 291% higher than the Louisiana average and 282% higher than the national average. The median age in Olla is 36 which is approximately equal to the Louisiana average of 36. In Olla, 66% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 83% of Olla residents were born in Louisiana, 15% were born out of state, 1% were born outside of the United States and 0% were foreign born.