Leon is a city in Butler County, Kansas, United States.

[8] According to the United States Census Bureau, the city has a total area of 0.75 square miles (1.94 km2), all of it land.

[9] Leon is located in Little Walnut Township, Butler County, Kansas, and it is its principal city.

The 2020 United States census counted 669 people, 264 households, and 188 families in Leon.

There were 291 housing units at an average density of 398.1 per square mile (153.7/km2).

24.2% of households consisted of individuals and 10.2% had someone living alone who was 65 years of age or older.

There were 297 housing units at an average density of 396.0 per square mile (152.9/km2).

25.8% of all households were made up of individuals, and 14% had someone living alone who was 65 years of age or older.

There were 269 housing units at an average density of 454.9 per square mile (175.6/km2).

24.5% of all households were made up of individuals, and 11.8% had someone living alone who was 65 years of age or older.

The community is served by Bluestem USD 205 public school district.