thumb|250px|right|Clark Lake

Columbia Township is a civil township of Jackson County in the U.S. state of Michigan. As of the 2020 census, the population was 7,392.

Communities

  • Brooklyn is a village in the southeast of the township.
  • Cement City (primarily in Lenawee County) lies within the south-central part of the township.
  • Clarklake is an unincorporated community around Clark Lake in the northwest of the township served by a US Post Office with the ZIP Code of 49234. It began as a settlement in 1833.
  • Lake Columbia is an unincorporated community around Lake Columbia in the south central part of the township.
  • Vineyard Lake is an unincorporated community and census-designated place partially within the township.

Geography

According to the United States Census Bureau, the township has a total area of , of which is land and (7.47%) is water.

The township is in southeastern Jackson County and is bordered to the south by Lenawee County. U.S. Route 127 follows the western border of the township and leads north to Jackson, the county seat, and south to Hudson. M-50 runs through the eastern side of the township and the village of Brooklyn, leading northwest to Jackson and southeast to Tecumseh. M-124 runs east-southeast from Brooklyn past Vineyard Lake and Wamplers Lake to US-12 in Lenawee County.

The township is the headwaters of the River Raisin which passes through Vineyard Lake and ultimately flows east to Lake Erie. Goose Creek passes through the manmade lake Lake Columbia then into the Raisin River. The headwaters of the Grand River pass through the west end of the township, ultimately leading north and west to Lake Michigan.

The township contains the northern part of the Michigan International Speedway property.

Government

:

  • Supervisor Barry Marsh
  • Clerk Cathy Hulburt
  • Treasurer John C. Calhoun
  • Trustees Robin Tackett, Rick Deland, Brent Beamish, and Rick Church

The township has a 24/7 police department, as well as a part-paid fire department (25 paid on-call), with two full-time fire personnel chief/fire inspector and assistant chief and two fire stations.

Demographics

As of the census