Louisiana cities/towns ranked by population Fri, 07/15/2022 - 12:00am The 2020 Census lists populations of Louisiana incorporated areas.Here is the list, starting with the largest city:1. New Orleans: 376,971 ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today! Read more about Louisiana cities/towns ranked by population