The following is a list of county routes in Saint Louis County, Minnesota, United States.

CR 1–CR 20

County Road 2 begins at the intersection of West Tischer Road with Rice Lake Road (CR 4), heads eastbound through the city of Rice Lake on West Tischer Road, and terminates at the intersection of West Tischer Road with Jean Duluth Road (CR 37). It is in length. County Road 2 is also known as West Tischer Road. County Road 3 begins at the intersection of Becks Road and State Highway 23 (MN 23) in the city of Duluth and continues north and west in Midway Township, just past the intersection of Becks Road and Carlton County Road 61 where Becks Road becomes Stenman Road, and terminates at the Saint Louis / Carlton county line. It is in length.

County Road 3 is also known as Becks Road in the Duluth area and serves as a truck route. The axle weight limit on this route is .

County Road 4 (sometimes referred to as Highway 4 or County 4), begins at the intersection of Central Entrance (MN 194) and Rice Lake Road in Duluth and continues north to its northern terminus at Biwabik in the Iron Range region of Minnesota. The route is also known as Rice Lake Road in the city of Duluth, the city of Rice Lake, and Gnesen Township; and known as the historic Vermilion Trail from Island Lake to Biwabik. It is also officially designated Governor Rudy Perpich Memorial Drive.

County 4 is in length and passes through the communities of:

Duluth Rice Lake Gnesen Township Markham Colvin Township White Township Biwabik Township Biwabik

County 4 serves as a north–south route between Duluth and Biwabik, and passes through the Cloquet Valley State Forest.

The southern terminus of County 4 is at the intersection of Rice Lake Road / Mesaba Avenue and Central Entrance (MN 194) in Duluth. The northern terminus of County 4 is at the intersection of Vermilion Trail and State Highway 135 (MN 135) in Biwabik.

County Road 5 (sometimes referred to as Highway 5 or County 5), begins at the intersection of County 5 and County 8 in Arrowhead Township and continues north to its northern terminus at the intersection of County 5 and West Olson Road (CR 114) near the St. Louis / Itasca county line (west of Cook). The section of County 5 in Ness Township, south of Meadowlands, is unpaved gravel surface.

County 5 passes through the communities of:

Arrowhead Township Ness Township Meadowlands Township Meadowlands Elmer Township Toivola Township Toivola Lavell Township Hibbing Balkan Township (briefly) French Township Side Lake Morcom Township

McCarthy Beach State Park is located on the route. County 5 intersects U.S. Highway 169 at two different locations near Hibbing and Chisholm.

County Road 6 begins at the intersection of U.S. Highway 53 and Maple Grove Road in the city of Duluth and continues west to its western terminus in Brevator Township at the intersection of Maple Grove Road and State Highway 33 (MN 33). It is in length and passes through the communities of Duluth, Hermantown, Solway Township, and Brevator Township.

County Road 6 is also known as Maple Grove Road in the Duluth area.

Maple Grove Road serves as an east–west arterial route between U.S. Highway 53, Haines Road (CR 91), Lavaque Road (CR 48), Midway Road (CR 13), U.S. Highway 2, and State Highway 33 (MN 33).

County Road 7 (sometimes referred to as Highway 7 or County 7), begins at the intersection of U.S. Highway 53 and Industrial Road in Grand Lake Township and continues north to its northern terminus at the city of Mountain Iron in the Mesabi Range region. County 7 is also known as Industrial Road in Grand Lake Township and Industrial Township. The highway is officially designated the Bobby Aro Memorial Highway. Aro was an Iron Range radio personality and entertainer whose best known song is "Highway No. 7".

County 7 is in length and passes through the communities of: Grand Lake Township (Twig) Industrial Township Burnett Culver Alborn Township Meadowlands Township Payne Kelsey Township Sax Zim McDavitt Township Forbes Clinton Township Iron Junction Mountain Iron

County 7 serves as primarily a north–south route for most of its length. It changes direction to east–west as it approaches Industrial Township and continues as east–west to its terminus at Highway 53 in the community of Twig in Grand Lake Township. County 7 parallels Highway 53 for much of its route, and crosses the Saint Louis River near Forbes, the Whiteface River in Kelsey Township, and the Cloquet River in Industrial Township.

County Road 8 begins at the intersection of State Highway 73 (MN 73) and County 8 in Floodwood and continues east to its eastern terminus at the intersection of U.S. Highway 53 and County 8 in Grand Lake Township near Twig. County 8 serves as a direct route between Floodwood and U.S. Highway 53. County 8 also has an intersection with State Highway 33 (MN 33) in Industrial Township near Independence. The majority of the route is unpaved gravel surface.

County Road 9 begins at the intersection of Martin Road and Midway Road (CR 13) in Canosia Township (at Pike Lake) and continues east to the intersection of Calvary Road and Woodland Avenue in the Woodland business district in the city of Duluth.

County Road 9 is in length and passes through Canosia Township and the city of Rice Lake.

County Road 9 (concurrent with County Road 10) is also known as Martin Road in the Duluth area and serves as a truck route. Martin Road serves as an east–west arterial route between Midway Road and Jean Duluth Road (CR 37) on the northern edge of Duluth. The axle weight limit on this route is .

A non-arterial two mile extension of County Road 9 follows North Pike Lake Road, Helm Road, and Caribou Lake Road.

County Road 10 begins at the intersection of Arnold Road (CR 9 and CR 36) and Martin Road (CR 9) in the city of Rice Lake and continues the east–west arterial route served by County Road 9 eastbound to Jean Duluth Road (CR 37). This western segment of County Road 10 is in length. The eastern segment of County Road 10 begins at the intersection of Jean Duluth Road (CR 37) and West Tischer Road (CR 2), north of where the western segment of County Road 10 terminates. The eastern segment of County Road 10 heads eastbound on West Tischer Road in Lakewood Township for , heads northbound on North Tischer Road for , then heads eastbound on Strand Road for , terminating at Lester River Road (CR 12).

County Road 11 is long. It begins at the intersection of Midway Road (CR 13) and Stark Road (CR 894) in Midway Township, heads eastbound on Stark Road, briefly heads southbound on Ugstad Road, heads eastbound through the city of Proctor on 4th Street, heads southbound on 5th Avenue North, then heads eastbound on 2nd Street, and terminates at Boundary Avenue (CR 14).

County Road 12 begins at the intersection of 60th Avenue East and East Superior Street in the Lakeside – Lester Park neighborhood of Duluth, heads eastbound on East Superior Street to 61st Avenue East, heads northbound on Lester River Road for , heads eastbound on Roberg Road for , heads northbound on Lakewood Road for , and terminates at Lismore Road (CR 43) in Lakewood Township. The one block portion of County Road 12 following East Superior Street from 60th Avenue East to 61st Avenue East / Lester River Road is an unmarked county route within the city of Duluth.

County Road 13 begins at the intersection of Midway Road and Becks Road (CR 3) in Midway Township and continues north to its northern terminus in Canosia Township / Pike Lake at the intersection of Midway Road and Martin Road (CR 9).

County Road 13 is in length and passes through the communities of Midway Township, the city of Hermantown, and Canosia Township.

County Road 13 is also known as Midway Road in the Duluth area and serves as a truck route. Midway Road serves as a key north–south arterial route along Duluth's western outskirts. The axle weight limit on this route is . Midway Road carries approximately 9,000 vehicles per day as of 2011.

The southern terminus of County Road 13 is near its interchange with Interstate Highway 35 in Midway Township. Its northern terminus is near its intersection with U.S. Highway 53 in the Pike Lake district of Canosia Township.

County Road 14 begins at the intersection of Midway Road (CR 13) and Thompson Hill Road in Midway Township, heads northeast on Thompson Hill Road / Mountain Drive while paralleling on the south side of Interstate Highway 35, briefly turns onto Skyline Parkway, then heads northbound on Boundary Avenue that divides Duluth from Proctor, then heads westbound on 5th Street in Proctor, terminating at its intersection with U.S. Highway 2.

County Road 15 begins at the intersection of Munger Shaw Road and U.S. Highway 53 in Grand Lake Township. The southern segment of County Road 15 heads northbound on Munger Shaw Road and terminates at the intersection of Taft Road (CR 48) and Munger Shaw Road (CR 223), located immediately south of Taft. The northern segment of County Road 15 begins at the intersection of Munger Shaw Road (CR 223) with Three Lakes Road (CR 49), heads northbound into Shaw, and terminates at its intersection with Comstock Lake Road (CR 52 and CR 547) located immediately east of Whiteface.

County Road 16 (sometimes referred to as Highway 16 or County 16), begins at the county line with Itasca County near Bengal; immediately southwest of Hibbing and near State Highway 73 (MN 73); and continues east to its eastern terminus at the county line with Lake County near Fairbanks.

County Road 16 is in length and passes through the communities of Bengal, Forbes, Peary, Makinen, Fairbanks, and Bassett. It serves as an east–west route between Fairbanks and the Hibbing area, and is also known as Townline Road and Wilson Road at various points throughout its route.

County 16 parallels State Highway 37 (MN 37) for part of its route.

County Road 17 is a short service route to the Duluth International Airport and the Federal Prison Camp located next to the airport. The route begins at the intersection of Arrowhead Road (CR 32) and Airbase Road, heads northwest along Airbase Road, then heads southbound on Airport Approach Road and Stebner Road, and terminates at the intersection of U.S. Highway 53 and Stebner Road.

County Road 20 begins at its intersection with Vermilion Trail (CR 4), near Bass Lake west of Palo, the route heads west and then north into McKinley, and terminates at its intersection with Main Street in McKinley. County 20 is also known as Heritage Trail. The route is 7 miles in length. County 20 intersects State Highway 135 (MN 135) at McKinley, between Gilbert and Biwabik.

CR 21–CR 40 County Road 21 (sometimes referred to as Highway 21 or County 21), is a route in the northern portion of the county, serving Pike Township, Embarrass Township, Embarrass, Waasa Township, Babbitt, Morse Township, and Ely. The route begins at its intersection with State Highway 169 (MN 169), near where Highway 169 crosses the Pike River, heads east and north for , enters Ely on Central Avenue, and terminates at its intersection with Sheridan Street (MN 169 / MN 1).

County Road 22 (sometimes referred to as Highway 22 or County 22), is a route in the northern portion of the county, serving Bear River, Morcom Township, Sturgeon Township, Alango Township, and Sherman Corner. The route begins in Bear River as Itasca County Road 22 becomes Saint Louis County Road 22, heads east for approximately and terminates in Sherman Corner at the county road's intersection with U.S. Highway 53 and State Highway 1 (MN 1). Until 1996, Itasca and Saint Louis County Roads 22 were Highway 1; and Highway 1 located north paralleling the county roads was the Itasca and Saint Louis County Roads 22.Steve Riner (July 26, 2003). Details of Routes 1-25. Unofficial Minnesota Highways Page. Accessed August 27, 2004.