As of the 2000 census, its population was 26,[4] but had increased to an estimated 71 by 2009.

[6] It was named after brothers Charlie and George Schrunk, early settlers from Iowa who moved to the area in 1893.

A second schoolhouse was constructed in 1908, and operated until 1957 when the school district was consolidated with nearby Wing.

[7] It was later organized as a civil township under the name Summit, and reported a 1920 population of 131.

[7][8] By the time of the 1908 Census, the township had been renamed Schrunk.