The St. Clair township is a subdivision of the Monona 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 St. Clair township subdivision - their combined population count is 374.
Approximatelly 143 people live in “Remainders” areas, that are officially not part of any city or town.
Total population of the subdivision is 517.
Racial makeup of this subdivision is as follows : White (99.03%),
followed by Two or More races (0.39%) and Black or African American (0.19%).
Median age for the male population is 48 and 51 for the female part.
Statistical data for the St. Clair township based on the 2010 U.S. Census