Brooke township represents an area within the Brooke township subdivision of the Buena Vista County (Iowa),
which is not part of any official city, town or other place of the Brooke township subdivision.
This area is populated by approximatelly 140 people and occupies the area of 38 square miles - 1 square miles represent water areas.
Racial makeup of the population is : White (97.14%), Asian (2.14%) and Some Other Race (0.71%).
The male part of the population has a median age of 41 and the “median female” is 54 years old.
Statistical data for the Brooke township based on the 2010 U.S. Census