Plaquemine is a city located in Iberville Parish Louisiana. With a 2020 population of 6,365, it is the 54th largest city in Louisiana and the 4184th largest city in the United States . Plaquemine is currently declining at a rate of -1.35% annually and its population has decreased by -10.59% since the most recent census, which recorded a population of 7,119 in 2010. Plaquemine reached it's highest population of 7,739 in 1970. Spanning over 3 miles, Plaquemine has a population density of 2,180 people per square mile.
The average household income in Plaquemine is $63,041 with a poverty rate of 27.01%. The median rental costs in recent years comes to $848 per month, and the median house value is $161,100. The median age in Plaquemine is 33.9 years, 29.7 years for males, and 37.3 years for females.