Harrison township represents an area within the Harrison township subdivision of the Mercer County (Missouri),
which is not part of any official city, town or other place of the Harrison township subdivision.
This area is populated by approximatelly 226 people and occupies the area of 45 square miles - 1 square miles represent water areas.
Racial makeup of the population is : White (96.9%), American Indian and Alaska Native (1.77%) and Two or More races (1.33%).
The male part of the population has a median age of 46 and the “median female” is 49 years old.
Statistical data for the Harrison township based on the 2010 U.S. Census