Marietta is a city located in Prentiss County Mississippi. With a 2020 population of 255, it is the 262nd largest city in Mississippi and the 15881st largest city in the United States . Marietta is currently declining at a rate of 0.00% annually and its population has decreased by -0.39% since the most recent census, which recorded a population of 256 in 2010. Marietta reached it's highest population of 257 in 2012. Spanning over 2 miles, Marietta has a population density of 143 people per square mile.
The average household income in Marietta is $49,407 with a poverty rate of 12.87%. The median rental costs in recent years comes to $625 per month, and the median house value is $78,900. The median age in Marietta is 51.5 years, 50.6 years for males, and 57.4 years for females.