
Marysville
- County:
- Marshall County
- County Seat:
- Yes
- Area (mi²):
- 4.562
- State:
- Kansas
Marysville is a city located in Marshall County, Kansas. Marysville has a 2025 population of 3,383. It is also the county seat of Marshall County. Marysville is currently declining at a rate of -0.32% annually and its population has decreased by -1.57% since the most recent census, which recorded a population of 3,437 in 2020.
The average household income in Marysville is $82,571 with a poverty rate of 9.24%. The median age in Marysville is 38.8 years: 38.4 years for males, and 39.9 years for females.