The Michigan Redistricting Commission (MICRC) on December 28 approved new maps for U.S. Representatives, MI Senate and MI Representative districts. You can find the official maps on their website at MICRC - Final Maps (michigan.gov)

Washtenaw County Apportionment Commission sets the number and boundary lines for County Commissioners.  County maps were approved November 8.  Apportionment Commission | Washtenaw County, MI