Roads of the Mid-South & West > Highways of the State of Michigan > Michigan State Route 21
 | Michigan State Route 21 |
Michigan State Route 21 runs east-west across Central Michigan. It goes from Grand Rapids to Flint. Info on MI St Rt 21 is broken down by county below.
Kent County Ionia County Clinton County
Shiawassee County Genesee County
5 September 2009