Michigan State Route 91 is a north-south highway in Western Montcalm County. It runs from the Ionia/Montcalm County Line, near Belding, to Michigan State Route 46, at Lakeview. MI St Rt 91 passes through the following towns in Montcalm County. Greenville
Langston Lakeview MI St Rt 91 is not multi-plexed in Montcalm County. MI St Rt 91 intersects the following highways in Montcalm County. Michgian State Route 57, at Greenville.
NB MI St Rt 91 at the Ionia/Montcalm County Line. NB MI St Rt 91 near Jenks Road. NB MI St Rt 91 south of Greenville. NB MI St Rt 91 south of MI St Rt 57. NB MI St Rt 91 at MI St Rt 57. NB MI St Rt 91 at Flat River. NB MI St Rt 91 near Eastern Ave. NB MI St Rt 91 near Wise Road. NB MI St Rt 91 north of Greenville. NB MI St Rt 91 south of Sidney Road.
