Mullinville is a city in Kiowa County, Kansas, United States.

[6] According to the United States Census Bureau, the city has a total area of 0.60 square miles (1.55 km2), all of it land.

[7] The 2020 United States census counted 197 people, 75 households, and 56 families in Mullinville.

There were 105 housing units at an average density of 163.8 per square mile (63.2/km2).

22.7% of households consisted of individuals and 9.3% had someone living alone who was 65 years of age or older.

There were 132 housing units at an average density of 220.0 per square mile (84.9/km2).

32.7% of all households were made up of individuals, and 19.6% had someone living alone who was 65 years of age or older.

29.2% of all households were made up of individuals, and 18.6% had someone living alone who was 65 years of age or older.

About 10.5% of families and 9.2% of the population were below the poverty line, including 11.6% of those under the age of eighteen and 13.0% of those 65 or over.

The community is served by Kiowa County USD 422 public school district.

[23] The Mullinville Tigers won the following Kansas State High School championships: