Bloomington Township is a township in Buchanan County, Missouri, United States. At the 2020 census, its population was 695.
Bloomington Township was organized in 1839; the name Bloomington is an old variant name of De Kalb.
Bloomington Township covers an area of and contains one incorporated settlement, De Kalb. It contains two cemeteries: Jones and West Lawn.
The stream of South Sugar Creek runs through this township.