Mer Rouge is a city located in Louisiana. With a 2020 population of 544, it is the 221st largest city in Louisiana and the 12953rd largest city in the United States. Mer Rouge is currently declining at a rate of -1.27% annually and its population has decreased by -13.38% since the most recent census, which recorded a population of 628 in 2010. Mer Rouge reached it's highest population of 620 in 2010. Spanning over 1 miles, Mer Rouge has a population density of 464 people per square mile.
The average household income in Mer Rouge is $92,762 with a poverty rate of 15.09%. The median rental costs in recent years comes to $545 per month, and the median house value is $96,600. The median age in Mer Rouge is 52.4 years, 45.7 years for males, and 52.9 years for females. For every 100 females there are 80.6 males.