Lake Arthur is a city located in Louisiana. With a 2020 population of 2,808, it is the 97th largest city in Louisiana and the 6436th largest city in the United States. Lake Arthur is currently growing at a rate of 0.61% annually and its population has increased by 2.56% since the most recent census, which recorded a population of 2,738 in 2010. Lake Arthur reached it's highest population of 3,615 in 1980. Spanning over 2 miles, Lake Arthur has a population density of 1,514 people per square mile.
The average household income in Lake Arthur is $49,041 with a poverty rate of 28.67%. The median rental costs in recent years comes to $595 per month, and the median house value is $72,300. The median age in Lake Arthur is 29.4 years, 28.1 years for males, and 33 years for females. For every 100 females there are 97.5 males.