Burr Oak is a city in Jewell County, Kansas, United States.

[6] According to the United States Census Bureau, the city has a total area of 0.83 square miles (2.15 km2), all land.

[7] The 2020 United States census counted 140 people, 69 households, and 35 families in Burr Oak.

47.8% of households consisted of individuals and 24.6% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 98.3% White, 0.6% Native American, and 1.1% from two or more races.

44.1% of all households were made up of individuals, and 30.1% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 96.98% White, 1.89% Native American, and 1.13% from two or more races.

39.1% of all households were made up of individuals, and 24.2% had someone living alone who was 65 years of age or older.

About 19.1% of families and 21.8% of the population were below the poverty line, including 20.0% of those under the age of eighteen and 14.8% of those 65 or over.

The community is served by Rock Hills USD 107 public school district.

Burr Oak became a part of Rock Hills USD 107 located in Mankato in 2006.