Port Allen is a city located in West Baton Rouge Parish Louisiana. With a 2020 population of 4,353, it is the 69th largest city in Louisiana and the 5172nd largest city in the United States . Port Allen is currently declining at a rate of -4.29% annually and its population has decreased by -15.97% since the most recent census, which recorded a population of 5,180 in 2010. Port Allen reached it's highest population of 6,277 in 1990. Spanning over 3 miles, Port Allen has a population density of 1,535 people per square mile.
The average household income in Port Allen is $70,523 with a poverty rate of 12.51%. The median rental costs in recent years comes to $934 per month, and the median house value is $135,100. The median age in Port Allen is 42.9 years, 40.4 years for males, and 45.6 years for females.