Kosciusko is a city located in Attala County Mississippi. It is also the county seat of Attala County. With a 2020 population of 6,552, it is the 55th largest city in Mississippi and the 4100th largest city in the United States . Kosciusko is currently declining at a rate of -1.27% annually and its population has decreased by -11.48% since the most recent census, which recorded a population of 7,402 in 2010. Kosciusko reached it's highest population of 7,415 in 1980. Spanning over 8 miles, Kosciusko has a population density of 869 people per square mile.
The average household income in Kosciusko is $53,196 with a poverty rate of 36.02%. The median rental costs in recent years comes to $471 per month, and the median house value is $97,200. The median age in Kosciusko is 36.1 years, 36.5 years for males, and 33.6 years for females.