Lyon township represents an area within the Lyon township subdivision of the Decatur County (Kansas),
which is not part of any official city, town or other place of the Lyon township subdivision.
This area is populated by approximatelly 13 people and occupies the area of 37 square miles - 0 square miles represent water areas.
Racial makeup of the population is : White (100%), Two or More races (0%) and (%).
The male part of the population has a median age of 61 and the “median female” is 57 years old.
Statistical data for the Lyon township based on the 2010 U.S. Census