Lone Elm is a city in Anderson County, Kansas, United States.

[3] A post office was opened in Lone Elm in 1879, and remained in operation until it was discontinued in 1956.

[4] Circa 1910, Lone Elm had a bank, a dozen retail establishments, and a population of 175.

[5] According to the United States Census Bureau, the city has a total area of 0.08 square miles (0.21 km2), all of it land.

[6] The 2020 United States census counted 27 people, 12 households, and 10 families in Lone Elm.

There were 14 housing units at an average density of 205.9 per square mile (79.5/km2).

16.7% of households consisted of individuals and 8.3% had someone living alone who was 65 years of age or older.

41.7% of all households were made up of individuals, and 33.3% had someone living alone who was 65 years of age or older.

25.0% of all households were made up of individuals, and 16.7% had someone living alone who was 65 years of age or older.