Baton Rouge, LA has a population of 228,694 and is the 96th largest city in the United States. The population density is 2,662 per sq mi which is 2901% higher than the Louisiana average and 2838% higher than the national average. The median age in Baton Rouge is 31 which is approximately 14% lower than the Louisiana average of 36. In Baton Rouge, 39% of the population over 15 years of age are married, 92% speak English and 3% speak Spanish. 77% of Baton Rouge residents were born in Louisiana, 17% were born out of state, 1% were born outside of the United States and 5% were foreign born.