Romeville, LA has a population of 268 and is the 23,057th largest city in the United States. The population density is 83 per sq mi which is 7% lower than the Louisiana average and 9% lower than the national average. The median age in Romeville is 25 which is approximately 31% lower than the Louisiana average of 36. In Romeville, 0% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 71% of Romeville residents were born in Louisiana, 29% were born out of state, 0% were born outside of the United States and 0% were foreign born.