Mankato is a city in and the county seat of Jewell County, Kansas, United States. As of the 2010 census, the city population was 869.
Mankato is located at 39°47′14″N 98°12′33″W / 39.78722°N 98.20917°W / 39.78722; -98.20917 (39.787220, -98.209274). According to the United States Census Bureau, the city has a total area of 1.0 square miles (2.6 km²), all of it land.
As of the census of 2000, there were 976 people, 436 households, and 256 families residing in the city. The population density was 964.0 people per square mile (373.1/km²). There were 509 housing units at an average density of 502.7 per square mile (194.6/km²). The racial makeup of the city was 98.67% White, 0.10% Asian, 0.20% from other races, and 1.02% from two or more races. Hispanic or Latino of any race were 0.92% of the population.