Marysville is a city located in Marshall County Kansas. It is also the county seat of Marshall County. With a 2020 population of 3,267, it is the 84th largest city in Kansas and the 5989th largest city in the United States . Marysville is currently declining at a rate of -0.03% annually and its population has decreased by -0.82% since the most recent census, which recorded a population of 3,294 in 2010. Marysville reached it's highest population of 4,143 in 1960. Spanning over 5 miles, Marysville has a population density of 714 people per square mile.
The average household income in Marysville is $63,264 with a poverty rate of 11.52%. The median rental costs in recent years comes to $606 per month, and the median house value is $91,500. The median age in Marysville is 38.8 years, 38.3 years for males, and 39 years for females.