Madison is a city in Greenwood County, Kansas, United States, along the Verdigris River. As of the 2010 census, the city population was 701.
Madison is located at 38°7′59″N 96°8′14″W / 38.13306°N 96.13722°W / 38.13306; -96.13722 (38.133014, -96.137252). According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.6 km²), all of it land.
As of the census of 2000, there were 857 people, 361 households, and 225 families residing in the city. The population density was 1,425.4 people per square mile (551.5/km²). There were 418 housing units at an average density of 695.2 per square mile (269.0/km²). The racial makeup of the city was 96.27% White, 0.12% African American, 0.93% Native American, 0.12% Asian, 0.47% from other races, and 2.10% from two or more races. Hispanic or Latino of any race were 1.40% of the population.