This is a list of bus routes operated by the Chicago Transit Authority. In 2023, the CTA bus system had a ridership of 161,699,200, or about 577,600 per weekday as of the third quarter of 2024.
Renumbered from 21B on November 30, 1975. 25 West Cermak was eliminated and replaced by an extension of 21 Cermak on June 18, 2006 when weekday service was added for the section that was Route 25 (weekend service on Route 21 for that section was added on December 19, 1998)
26 26th
26th/Cottage Grove
26th/Halsted
Daily
Archer
Combined with Route 31 on February 5, 1956 (this section was removed on November 10, 1975). Number reused on 26 South Shore Express on August 26, 2003
Internal accounting number for local streetcar service; became part of Route 4 when service was converted to buses on June 19, 1955. Number reused on 29 State on February 15, 1976.
30 Whiting-East Chicago
63rd/South Park
East Chicago
Daily
Burnside/Cottage Grove
Internal accounting number for local streetcar service, not publicly used. On June 9, 1940, service in Indiana was converted to buses and removed. That same day, it was rerouted in Illinois, replacing the streetcar portion of Route 32, and the route was renamed 30 South Chicago-Ewing. Route was converted to buses on June 30, 1947, and 30 South Chicago-Ewing merged with 25 Hegewisch to form the 30 South Chicago in 1952.
32 Hammond
63rd/Stony Island
Hammond
Daily
Archer
Internal accounting number for local streetcar service, not publicly used. Discontinued June 9, 1940 when Indiana service was converted to buses, and the rest was replaced by Route 30.
Originally Route 31A; discontinued October 5, 1997
33 Indiana
51st/Indiana
Downtown
Daily
Cottage Grove (later 52nd)
Internal accounting number for local streetcar service, not publicly used. On June 29, 1952, weekend service was discontinued as Route 38, a bus route, was created to replace streetcar service on weekends. Discontinued on May 24, 1953 when all streetcar service was discontinued and Route 38 was extended to serve all seven days a week.
Created April 7, 1989. Discontinued March 31, 2013
34 State
Downtown
119th/Morgan
Daily
77th Street
Internal accounting number for local streetcar service, not publicly used. Combined with 36 Broadway on August 19, 1937; 34A Riverdale was renumbered to 34 South Michigan the same day.
34A Riverdale
119th/Michigan
138th/Indiana
Daily
Burnside
Connected with Route 34 State. Renumbered 34 South Michigan on August 19, 1937.
36A Devon
Clark/Devon
Kedzie/Devon
Daily
North Park
Created by June 21, 1931; became part of 36 Broadway on July 10, 1932. This section became Route 36A again when it was converted to buses on December 15, 1947. Combined with Route 155 on October 18, 1953.
Temporary route to expand weekday rush service for Brown line station closures during the Wells street bridge project.
38 Lincoln/Rosehill
Howard/McCormick
Downtown
Daily
Lincoln
Internal accounting number for local streetcar service, not publicly used. Renumbered Route 11 upon conversion to buses on March 11, 1951.
38 Indiana
63rd/Indiana
Downtown
Daily
52nd
Created on June 29, 1952, as the bus variant of streetcar Route 33, running weekends only. On May 24, 1953, streetcar service was converted to buses, service extended to all seven days a week, and service extended south from 51st Street to 63rd Street. Combined into 1 Indiana-Hyde Park north of 51st Street and discontinued south of 51st Street on September 13, 1981. This section south of 51st Street was restored as Route 38 on February 6, 1983 and discontinued January 24, 1988.
Operated from May 19, 2013 to October 2013 while the Dan Ryan branch was closed for the Red Line South Reconstruction project.
40 Lincoln-Riverview
Downtown
Peterson/Lincoln
Daily
Lincoln
Internal accounting number for local streetcar service, not publicly used. Renumbered Route 10 when service was converted to buses on February 18, 1951.
40 Planetarium
CMC summer beach shuttle
Summer only
Wilcox
Created in 1951; combined with Route 126 Jackson by 1970.
The section from Jefferson Park to River Road was discontinued after the Blue Line was extended to Rosemont on February 27, 1983. The Blue Line was extended to O'Hare on September 3, 1984, and Route 40 was discontinued that day.
40 Chinatown/Pilsen Shuttle
Roosevelt/State
Damen/Roosevelt
Weekdays and holidays
Kedzie
Created on May 28, 2005. Discontinued on December 16, 2012.
Created January 24, 1988; discontinued December 16, 2012.
64X Cumberland Express
Cumberland Ave/Kennedy Expwy
Foster/Lawrence
Weekdays
Forest Glen
Created May 25, 1972 as a split from 40 O'Hare Express; renumbered Route 69 on March 31, 1976.
68 Division
Mozart/Division
Wells/Division
Daily
Kedzie
Internal accounting number for local streetcar service, not publicly used. Combined with Route 70 upon conversion to buses on February 4, 1951. Number reused on current Route 68 Northwest Highway on February 1, 1970.
Route number was originally skipped to avoid confusion with Route 67 operating via 69th Street. Created March 31, 1976 as a renumbering of Route 64X; split into 69 Foster/East River, 81W West Lawrence, and 92W West Foster on February 27, 1983.
Internal accounting number for local streetcar service, not publicly used. Renumbered Route 36A by June 21, 1931 (became part of 36 Broadway on July 10, 1932); number reused on 82 Kimball (now 82 Kimball/Homan) on June 21, 1931.
83 83rd
Jeffery/South Chicago
83rd/Lakefront
Daily
Forest Glen
Sunday service removed September 10, 1961. Combined with Route 95 on September 8, 1963.
84 North Ashland
Irving Park/Ashland
Fullerton/Ashland
Daily
Lincoln/Noble/69th St.
Internal accounting number for local streetcar service, not publicly used. Combined with Route 9 on August 21, 1936. Number reused for 84 Peterson on June 19, 1939.
Operated from July 23, 2023 to August 20, 2023 and from September 29, 2023 to October 2, 2023 while partial of the Forest Park branch was closed for the Forest Park Branch Rebuild project.
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(Orange) and 63rd/Stony Island),
