Manchester township represents an area within the Manchester township subdivision of the Boone County (Illinois),
which is not part of any official city, town or other place of the Manchester township subdivision.
This area is populated by approximatelly 895 people and occupies the area of 34 square miles - 1 square miles represent water areas.
Racial makeup of the population is : White (98.1%), Two or More races (0.67%) and American Indian and Alaska Native (0.22%).
The male part of the population has a median age of 47 and the “median female” is 48 years old.
Statistical data for the Manchester township based on the 2010 U.S. Census