Iowa State Highway 4 is a north-south highway located in the state of Iowa. It spans approximately 90 miles, connecting the cities of Fort Dodge and Humboldt. The highway serves as a vital route for local traffic and provides access to various communities along its path. The road features a mix of rural landscapes and small towns, making it an important corridor for agriculture and commerce in the region. Iowa State Highway 4 intersects with several other state highways, enhancing connectivity for travelers and residents alike.