In addition to Decorah,[2] the census-designated place of Burr Oak is in the district boundary.

[3] Other unincorporated areas in the district include Bluffton, Freeport, Hesper, Highlandville, Locust, and Nordness.

[4] In 2016, the North Winneshiek district agreed to consolidate with the Decorah CSD.

[4] In 2018 the combined interim board of Decorah CSD and North Winneshiek CSD approved an agreement with Mabel-Canton Public Schools in Minnesota, effective for five years, to allow students in the former North Winneshiek district boundary to attend Mabel-Canton if they choose.

[11] School buildings in the district, all of which are in Decorah, include: North Winneshiek School, which is no longer open,[12] is now in the possession of Decorah CSD, which spent $88,000 on upkeep from July 1, 2019 through January 27 of the following year.