Cooperstown Township is a township in Griggs County, North Dakota, United States.
There was a meeting called by the county clerk of Griggs County on February 9, 1888, at 2 PM for organizing Township 146-59, also known as Cooperstown Township. The first township records were destroyed.
Its population during the 2010 census was 56.
Cooperstown Township is located in Township 146 Range 59 west of the Fifth principal meridian.