Lillis is an unincorporated community in Marshall County, Kansas, United States.

[2] A post office was opened in Lillis in 1910, and remained in operation until it was discontinued in 1958.

[3] The Lillis Gymnasium is on the National Register of Historic Places.

The community and nearby rural areas are served by Vermillion USD 380 public school district.

This article about a location in Marshall County, Kansas is a stub.