Iowa Highway 4

Iowa Highway 4
Iowa 4 highlighted in red
Route information
Maintained by Iowa DOT
Length:	146.343 mi (235.516 km)
Existed:	January 1, 1969 (1969-01-01) – present
History:	1920–1968: Iowa 17
Major junctions
South end:	Iowa 44 / CR P28 at Panora
	US 30 at Jefferson US 20 near Rockwell City US 18 at Emmetsburg
North end:	MN 4 north of Estherville
Location
Counties:	Guthrie Greene Calhoun Pocahontas Palo Alto Emmet
Highway system
Iowa Primary Highway System Interstate U.S. State Secondary Scenic ← Iowa 3 No. 4 →

Iowa Highway 4 (Iowa 4) is a state highway which runs from north to south across the state of Iowa. It is 146 miles (235 km) long, beginning at an intersection with Iowa Highway 44 in Panora and ending at the Minnesota state line north of Estherville. It continues north as Minnesota State Highway 4. The route was created on January 1, 1969, when several route designations were changed to match other states' route numbers. Before 1969, Iowa 4 was known as Iowa 17.

Iowa Highway 4 begins at Panora at Iowa 44. It goes north and is briefly overlapped with Iowa Highway 141 north of Yale. It continues north until Jefferson, where it intersects U.S. Route 30 (US 30). It goes north, then turns west to enter Churdan, then turns north until meeting Iowa 175. At Iowa 175, the highway turns west, with Iowa 175, passing through Lohrville. It turns north west of Lohrville, and continues north through Rockwell City, where it intersects US 20.

After a short concurrency with US 20, Iowa 4 continues north, and intersects Iowa 7. They overlap through Pomeroy, then Iowa 4 goes north through Pocahontas, which is where it intersects Iowa 3. North of Pocahontas, Iowa 4 meets Iowa 10 east of Havelock before passing through Mallard. Iowa 4 then goes north into Emmetsburg, where it meets US 18.