During the 1960s, U.S. Highway 30 (US 30) in central Iowa was reconstructed to the south of where it ran, bypassing the cities of Marshalltown, Ames, and Boone.

Iowa 930 begins at two half interchanges with US 30 in eastern Boone County.

The two directions meet at the corner of 230th Street and X Avenue in the Boone County road grid.

The Iowa 930 roadway continues in Story County as CR R38 and is known as Lincoln Way.

[2] The entire route is in Colfax Township, Boone County.