U.S. Federal Route 31 is a north-south highway in Howard County. It runs from the Miami/Howard County Line, near Cassville, to the Howard/Tipton County Line, south of Kokomo. U.S. Rt. 31 passes through the following towns in Howard County. Cassville Kokomo
U.S. Rt. 31 is multi-plexed in Howard County. U.S. Rt. 35, at Kokomo.
U.S. Rt. 31 intersects the following highways in Howard County. Indiana State Route 931, at Kokomo.
SB U.S. Rt. 31 at the Howard/Miami County Line. SB U.S. Rt. 31 north of IN St Rt 931. SB U.S. Rt. 31 at IN St Rt 931. SB U.S. Rt. 31 at IN St Rt 931. SB U.S. Rt. 31 at north U.S. Rt. 35. SB U.S. Rt. 31/35 at Touby Pike. A BGS on Touby Pike. SB U.S. Rt. 31/35 at 100N Road. SB U.S. Rt. 31/35 at IN St Rt 22. A junction marker on EB IN St Rt 22. SB U.S. Rt. 31 at IN St Rt 26. SB U.S. Rt. 31 south of IN St Rt 26.
