The Walnut township is a subdivision of the Madison County, in the state of Iowa.
This subdivision represents an area of 37 square miles - 1 square miles are water areas.
There are 1 cities, towns or villages in the Walnut township subdivision - their combined population count is 125.
Approximatelly 283 people live in “Remainders” areas, that are officially not part of any city or town.
Total population of the subdivision is 408.
Racial makeup of this subdivision is as follows : White (99.51%),
followed by Two or More races (0.49%) and Some Other Race (0%).
Median age for the male population is 46 and 42 for the female part.
Statistical data for the Walnut township based on the 2010 U.S. Census