# List of county roads in DuPage County, Illinois

The DuPage County Highway System is a county-maintained system of arterial county highways in DuPage County, Illinois, United States. They are marked with the standard M1-6 pentagon-shaped highway marker on the base of traffic signals at intersections with other county highways. They are not marked on any freeway or tollway exits or signed with separate reassurance markers. In addition, although concurrencies of county highways exist in the county, they too are not explicitly signed as such.
County Highways 47, 48, 49, 55 and 57 all refer to segments of the Illinois Prairie Path and the Great Western Trail, major bike trails through DuPage County. No motorized traffic is allowed on these trails/highways.

## Route list

| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Local names | Formed | Removed | Notes |
| CR 1 | 1.51 | 2.43 | South DuPage–Will county line (87th Street) | CR 33 (West 75th Street) | Plainfield–Naperville Road | — | — | Southern segment, Plainfield-Naperville Road continues south as Will County Highway 14 |
| CR 1 | 3.24 | 5.21 | US 34 (Ogden Avenue) in Naperville | CH 32 (Warrenville Road) in Warrenville | Raymond Drive, Ferry Road, River Road | — | — | Northern segment |
| CR 2 | 4.70 | 7.56 | Washington Street in Naperville | CR 38 (63rd Street) near Woodridge | Hobson Road | — | — | Southwestern segment |
| CR 2 | 4.56 | 7.34 | CR 38 (63rd Street) in Downers Grove | IL 56 (Butterfield Road) in Downers Grove | Finley Road, Belmont Road | — | — | Northeastern segment |
| CR 3 | 10.63 | 17.11 | CR 14 (North Eola Road) in Aurora | CR 2 (Finley Road) in Downers Grove | Warrenville Road, Ferry Road | — | — | |
| CR 4 | 7.05 | 11.35 | CR 21 (Geneva Road) in Glen Ellyn | Devon Avenue in Roselle | Bloomingdale Road, Roselle Road | — | — | Continues north as Cook V60 |
| CR 5 | 2.08 | 3.35 | IL 53 (Lincoln Avenue) near Lisle | Buena Vista Drive, Raintree Drive in Glen Ellyn | Park Boulevard | — | — | Southern segment |
| CR 5 | 3.19 | 5.13 | CR 21 (Geneva Road) in Glen Ellyn | CR 11 (Army Trail Road) in Glendale Heights | Main Street, Glen Ellyn Road | — | — | Northern segment; connects to southern segment via Park Boulevard, IL 38 (Roosevelt Road), and Main Street |
| CR 6 | — | — | East Bartlett limits | CR 6 (South Bartlett Road) | Devon Avenue | — | — | |
| CR 6 | — | — | CR 6 (Devon Avenue) | Schick Road | South Bartlett Road | — | — | Simultaneously runs as Cook B11 |
| CR 7 | 7.10 | 11.43 | IL 64 (North Avenue) in West Chicago | IL 53 (Columbine Avenue) in Lombard | St. Charles Road | 01937-01-011937 | current | Overlaps CR 23 (Gary Avenue) in Carol Stream and CR 21 (Geneva Road) in Glen Ellyn; St. Charles Road continues west to a local business in West Chicago and east to 4th Avenue in Maywood; formerly known as Illinois Route 118 |
| CR 8 | — | — | IL 19 (Irving Park Road) | Devon Avenue | North York Road | — | — | Northern segment |
| CR 8 | — | — | Golf Club Entrance | 400 feet (120 m) south of Spring Road | South York Road | — | — | Central segment |
| CR 8 | 2.85 | 4.59 | I-55 North Frontage Road/Joliet Road | CR 35 (55th Street) | Madison Street | — | — | Southern segment |
| CR 9 | — | — | US 34 (Ogden Avenue) | IL 56 (Butterfield Road) | Main Street – Downers Grove, Highland Avenue | — | — | Northern segment |
| CR 9 | — | — | South DuPage–Cook county line (Bluff Road) | CR 35 (55th Street) | Lemont Road, Main Street – Downers Grove | — | — | Southern segment |
| CR 10 | — | — | Devon Avenue | IL 19 (Irving Park Road) | Arlington Heights Road, Prospect Avenue | — | — | Arlington Heights Road continues north as Cook V69 |
| CR 11 | — | — | West DuPage-Kane county line in Wayne | IL 53 (Rohlwing Road) in Addison | Army Trail Road | — | — | Army Trail Road continues west to IL 25 near Wayne and East to John F. Kennedy Drive in Addison |
| CR 13 | — | — | CR 53 (Diehl Road) in Warrenville | IL 38 (Roosevelt Road) in Winfield | Winfield Road | — | — | |
| CR 14 | 4.35 | 7.00 | East New York Street in Aurora | IL 56 (Butterfield Road) in Aurora | Eola Road | — | — | |
| CR 15 | — | — | US 34 (Ogden Avenue) in Westmont | IL 38 (Roosevelt Road) in Oakbrook Terrace | Summit Avenue, Midwest Road, Cass Avenue | — | — | Northern segment |
| CR 15 | — | — | 91st Street near Darien | CR 35 (55th Street) | South Cass Avenue | — | — | Southern segment |
| CR 17 | — | — | Julian Street in Naperville | Dunham Road in Downers Grove | Maple Avenue, Chicago Avenue | — | — | |
| CR 18 | — | — | IL 38 (Roosevelt Road) | IL 64 (North Avenue) | Powis Road, Hawthorne Lane, Kress Road | — | — | Southern segment |
| CR 18 | — | — | CR 29 (Stearns Road) | North DuPage–Cook county line | Munger Road | — | — | Northern Segment. Munger Road continues north as Cook V44 |
| CR 20 | 2.44 | 3.93 | US 20 (Lake Street) | East DuPage–Cook county line (County Line Road) | Grand Avenue | — | — | Grand Avenue continues east through Cook County to US 41 (Lake Shore Drive) in Chicago |
| CR 21 | — | — | IL 59 (Neltnor Boulevard) in West Chicago | Main Street – Glen Ellyn in Glen Ellyn | Geneva Road, Washington Street | — | — | Eastern segment |
| CR 21 | — | — | West DuPage-Kane county line | IL 38 (Roosevelt Road) | Fabyan Parkway | — | — | Western segment |
| CR 22 | 2.29 | 3.69 | US 20 (Lake Street) in Addison | IL 19 (Irving Park Road) in Itasca | Addison Road | — | — | Addison Road continues north to Thorndale Avenue in Itasca as Prospect Avenue, and south to St. Charles Road in Villa Park |
| CR 23 | — | — | US 34 (Ogden Avenue) in Naperville | IL 38 (Roosevelt Road) in Wheaton | Naper Boulevard, Naperville Road | — | — | Southern segment |
| CR 23 | 7.68 | 12.36 | CR 27 (Jewell Road) in Wheaton | DuPage–Cook county line south of IL 390 near Roselle | Gary Avenue | — | — | Northern segment |
| CR 24 | 4.23 | 6.81 | CR 11 Army Trail Road near Glendale Heights | IL 390 (Elgin-O'Hare Tollway) in Medinah | Walter Drive, Byron Avenue, Medinah Road | — | — | Walter Drive and Byron Avenue are used as connectors to US 20 (Lake Street and Medinah Country Club between Army Trail Road. These roads are residential and therefore lightly travelled. |
| CR 25 | — | — | US 34 (Ogden Avenue) in Downers Grove | IL 38 (Roosevelt Road) in Lombard | Meyers Road, Fairview Avenue | — | — | |
| CR 26 | 4.0 | 6.4 | 800 feet (240 m) West of Park Boulevard in Elk Grove Village | North York Road in Bensenville | Thorndale Avenue | — | 02017-01-012017 | Thorndale Avenue continues west to I-290 and IL 390; this highway was replaced by IL 390 in November 1, 2017 |
| CR 27 | — | — | CR 43 (County Farm Road) | CR 23 (Gary Avenue) | Jewell Road | — | — | Eastern segment |
| CR 27 | — | — | CR 21 (Geneva Road) near West Chicago | Winfield Road | Highlake Road, Prince Crossing Road | — | — | Western segment |
| CR 28 | — | — | IL 64 (North Avenue) in Villa Park | Devon Avenue in Elk Grove Village | Villa Avenue, Wood Dale Road | — | — | Villa Avenue continues 3.20 miles (5.15 km) south to IL 38 (Roosevelt Road) in Villa Park |
| CR 29 | — | — | West DuPage–Kane county line in Wayne | CR 6 (South Bartlett Road) in Bartlett | Stearns Road | — | — | Western segment |
| CR 29 | — | — | CR 43 (County Farm Road) in Hanover Park | US 20 (Lake Street) in Hanover Park | Greenbrook Boulevard | — | — | Eastern segment |
| CR 31 | — | — | CR 9 (Lemont Road) in Darien | East DuPage–Cook county line (County Line Road) | Plainfield Road | — | — | Eastern Segment. Plainfield Road continues east as Cook B37 |
| CR 31 | — | — | West DuPage-Will county line in Woodridge, 500 feet (150 m) west of CR 56 (Woodward Avenue) | CR 9 (Lemont Road) in Darien | 87th Street | — | — | Western segment |
| CR 32 | — | — | US 34 (Ogden Avenue) in Naperville | CR 3 (Ferry Road), CR 32 (Warrenville Road) in Warrenville | Mill Street | — | — | |
| CR 32 | — | — | CR 1 (River Road) | CR 3 (Ferry Road/Warrenville Road), CR 32 (Mill Street) | Warrenville Road | — | — | |
| CR 33 | 14.47 | 23.29 | US 34 (Ogden Avenue) in Aurora | IL 83 (Kingery Highway) in Willowbrook | 75th Street | — | — | Longest county highway in DuPage County |
| CR 34 | 4.74 | 7.63 | East DuPage–Cook county line (just west of I-294 in Oak Brook) | CR 9 (Highland Avenue) | 31st Street/Oak Brook Road | — | — | |
| CR 35 | 5.25 | 8.45 | Dunham Road | East DuPage–Cook county line (County Line Road) | 55th Street | — | — | |
| CR 36 | 3.55 | 5.71 | CR 21 (Geneva Road) in Wheaton | CR 11 (Army Trail Road) in Bloomingdale | Schmale Road | — | — | Schmale Road continues south of Geneva Road as Main Street to Farnham Lane in Wheaton |
| CR 38 | — | — | CR 2 (Hobson Road) in Woodridge | CR 8 (Madison Street) in Willowbrook | 63rd Street | — | — | |
| CR 40 | — | — | CR 33 (East 75th Street) in Naperville | CR 3 (Warrenville Road) in Lisle | Wehrli Road, College Road, Yackley Avenue | — | — | |
| CR 41 | 0.31 | 0.50 | Janes Avenue near Downers Grove | CR 2 (Belmont Road) in Downers Grove | Hobson Road | — | 02021-01-012021 | No longer a county highway as of 2021 |
| CR 43 | 9.11 | 14.66 | IL 38 (Roosevelt Road) in Wheaton | DuPage–Cook county line south of US 20 (Lake Street) in Hanover Park | County Farm Road | — | — | County Farm Road continues north to US 20 (Lake Street), then as Barrington Road to IL 59 in Barrington |
| CR 47 | — | — | West DuPage–Kane county line | Liberty Drive | Illinois Prairie Path – Aurora Branch | — | — | |
| CR 47 | — | — | Carlton Avenue | East DuPage–Cook county line (I-294 [Tri-State Tollway]) | Illinois Prairie Path – Main Stem | — | — | |
| CR 48 | — | — | Liberty Street | West DuPage–Kane county line | Illinois Prairie Path – Elgin Branch | — | — | |
| CR 49 | — | — | West DuPage–Kane county line (300 feet [91 m] south of IL 56 [Butterfield Road]) | I-88 (Ronald Reagan Memorial Tollway) IL 110 (CKC) | Illinois Prairie Path – Batavia Spur | — | — | |
| CR 50 | 1.29 | 2.08 | CR 43 (County Farm Road) in Hanover Park | CR 23 (Gary Avenue) in Bloomingdale | Schick Road | — | — | Schick Road continues west to IL 59 in Bartlett and east to Glen Ellyn Road in Bloomingdale |
| CR 51 | 1.1 | 1.8 | CR 3 (Warrenville Road) near Naperville | IL 56 (Butterfield Road) near Wheaton | Herrick Road | — | — | |
| CR 52 | 0.2 | 0.32 | US 34 (Ogden Avenue) | CR 3 (Warrenville Road) | Cross Street | — | — | Shortest county highway in DuPage County |
| CR 53 | — | — | CR 1 (Raymond Drive) near Naperville | CR 32 (Mill Street) in Warrenville | Diehl Road | — | — | |
| CR 54 | 1.29 | 2.08 | CR 7 (St. Charles Road) near Glen Ellyn | Collins Avenue in Glendale Heights | Swift Road | — | — | Swift Road continues north to Nordic Road in Bloomingdale |
| CR 55 | — | — | Illinois Prairie Path – Elgin Branch | East of Salt Creek/West Avenue in Elmhurst | Great Western Trail | — | — | |
| CR 56 | 1.63 | 2.62 | CR 33 (75th Street) in Woodridge | CR 31 (87th Street) in Woodridge | Woodward Avenue | — | — | |
| CR 57 | — | — | West DuPage–Kane county line (Kautz Road) | CR 43 (County Farm Road) in Winfield | Illinois Prairie Path – Geneva Spur | — | — | |
| CR 59 | 0.28 | 0.45 | I-88 (Ronald Reagan Memorial Tollway) IL 110 (CKC) in Naperville | CR 3 (Warrenville Road) in Naperville | Freedom Drive | 02012-01-012012 | current | |
| CR 60 | 0.3 | 0.48 | Prospect Avenue in Itasca | Arlington Heights Road in Itasca | North Thorndale Avenue, Ketter Drive | 02018-11-012018 | current | Westbound only, western segment |
| CR 61 | 0.3 | 0.48 | Prospect Avenue in Itasca | Arlington Heights Road in Itasca | South Thorndale Avenue | 02018-11-012018 | current | Eastbound only, western segment |
| CR 61 | 2.5 | 4.0 | Mittel Drive in Wood Dale | York Road in Bensenville | South Thorndale Avenue | 02018-11-012018 | current | Eastern segment |