AreaVibes reveals the best places to live in Louisiana for 2016 using our Livability Score. The Livability Score for each city in Louisiana is calculated out of 100 from a unique algorithm based on various metrics, including: amenities, cost of living, crime, education, employment, housing and weather. Louisiana has a population of 4,529,605 and a population density of 88.7 people per square mile. The capital city is Baton Rouge and the largest city in Louisiana is New Orleans. To filter the results, use the dropdown options to sort by population or category.