Preston township represents an area within the Preston township subdivision of the Plymouth County (Iowa),
which is not part of any official city, town or other place of the Preston township subdivision.
This area is populated by approximatelly 281 people and occupies the area of 37 square miles - 0 square miles represent water areas.
Racial makeup of the population is : White (97.51%), Some Other Race (1.07%) and Two or More races (0.71%).
The male part of the population has a median age of 39 and the “median female” is 41 years old.
Statistical data for the Preston township based on the 2010 U.S. Census