Columbia Township is a civil township of Van Buren County in the U.S. State of Michigan. The population was 2,714 at the 2000 census. Columbia Township is a largely rural area with many farms. It is also home to several lakes with a significant percentage of the population living on them, frequently retirees from Chicago. Many summer lake cottages are owned by families with roots in the Chicago area.

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Grand Junction unincorporated, although it has a larger business district than Breedsville, is located in the northwest part of the township. It is so named because it is located at the junction of two railroad lines, though only one now survives. It was first settled by David Young in the fall of 1869 and platted on December 8, 1871.