[1] Little Walnut Township covers an area of 36.37 square miles (94.2 km2) and contains one incorporated settlement, Leon.

The Leon town site was laid out and surveyed in November 1879.

According to the USGS, the Little Walnut Township contains two cemeteries: Leon and Quito.

The streams of North Branch Little Walnut River and South Branch Little Walnut River run through this township.

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