The Blue Line is a 26.93-mile-long (43.34 km) Chicago "L" line which extends through The Loop from O'Hare International Airport at the far northwest end of the city, through downtown via the Milwaukee–Dearborn subway and across the West Side to its southwest end at Forest Park, with a total of 33 stations. At about 27 miles, it is the longest line on the Chicago "L" system and second busiest, and one of the longest local subway/elevated lines in the world. It has an average of 64,978 passengers boarding each weekday in 2022.
Sox–35th is an 'L' station on the CTA's Red Line. It is situated at 142 West 35th Street in the Armour Square neighborhood. The station opened on September 28, 1969, along with the other eight stations on the Dan Ryan branch.
Rosemont, formerly River Road, is a Chicago "L" station at the intersection of River Road and I-190 in the suburb of Rosemont, Illinois. It is located in the median of I-190 with one island platform serving two tracks, 16 miles (26 km) northwest of The Loop. Trains are scheduled to depart from Rosemont every 2–7 minutes during rush-hour periods, and take about 36 minutes to travel to the Loop. The station is 7 blocks east and 2 blocks north of O'Hare International Airport. Rosemont is the busiest station outside the city limits of Chicago, with 2,090,977 passenger entries in 2014.
Cumberland is a station on the Chicago Transit Authority's 'L' system. Situated on the Blue Line between Rosemont and Harlem, the station is located in the median of the Kennedy Expressway at Cumberland Avenue in the O'Hare community area on Chicago's Northwest Side. It is also in close proximity to both the Norwood Park neighborhood and the city of Park Ridge as well as the village of Norridge. The area surrounding the station consists of mixed commercial and residential development.
Harlem is a Chicago "L" station serving the Blue Line's O'Hare branch in Chicago's Norwood Park neighborhood. It is not to be confused with the other Harlem Blue Line station. Trains run from Harlem every 2–7 minutes during rush hour, and take 30–45 minutes to travel to the Loop. O'Hare-bound trains take 10 minutes to reach the airport from Harlem. The station is located in the median of the Kennedy Expressway.
Montrose is a station on the Chicago Transit Authority's 'L' system, serving the Blue Line. The station serves the Irving Park, Mayfair, and Portage Park neighborhoods. Blue Line trains run at intervals of 2–7 minutes during rush hour, and take 22 minutes to travel to the Loop. The station is located in the median of the Kennedy Expressway. The station opened in 1970 as part of the Kennedy extension, connecting the Milwaukee Elevated from Logan Square to Jefferson Park.
Addison is a station on the Chicago Transit Authority's 'L' system, serving the Blue Line. It is also the only station whose coordinates are equal. It is the first station in the median of the Kennedy Expressway located between the Avondale neighborhood and Irving Park neighborhood. The Villa District is accessible by this station.
Belmont is an 'L' station on the CTA's Blue Line. The station is located at Belmont and Kimball Avenues in the Avondale neighborhood. From Belmont, trains run at intervals of 2–7 minutes during rush hours, and take 16 minutes to reach the Loop.
Logan Square is a subway station on the Chicago Transit Authority's 'L' system, serving the Blue Line and the Logan Square neighborhood. It was the terminus of the Milwaukee Elevated until it was extended to Jefferson Park in 1970 via the Kennedy Expressway. From Logan Square, trains run at intervals of 2–7 minutes during rush-hour periods, and take 14 minutes to travel to the Loop. O'Hare bound trains take 26 minutes to reach the airport.
UIC–Halsted, is a Chicago "L" station on the CTA's Blue Line. The station serves the University of Illinois at Chicago, the University Village neighborhood, and the Greektown neighborhood all located in the Near West Side.
Racine is an 'L' station on the CTA's Blue Line. The station serves the Near West Side neighborhood and the western end of the UIC campus.
Illinois Medical District is a station on the Chicago Transit Authority's 'L' system, serving the Blue Line's Forest Park branch. It is located in the median of the Eisenhower Expressway. Prior to June 25, 2006, the station was known as Medical Center. As the name implies, it primarily serves the Illinois Medical District and Tri-Taylor neighborhood, but is also close to the United Center, home of the Chicago Bulls and Chicago Blackhawks sports teams.
Western is a station on the 'L' system, serving the Blue Line's Forest Park branch. It is located in the median of the Eisenhower Expressway. It serves the Near West Side neighborhood and Crane Tech High School. The station is also located about 1 mile (1.6 km) north of the Western Avenue commuter railroad station.
Kedzie–Homan is an 'L' station on the CTA Blue Line's Forest Park branch. The station is located in the median of the Eisenhower Expressway and serving the East Garfield Park neighborhood and has two entrances on the Kedzie and Homan Avenue overpasses.
Pulaski is a station on the Chicago 'L' system, serving the Blue Line's Forest Park branch. The station is located in the median of the Eisenhower Expressway and serves the West Garfield Park neighborhood. A long ramp connects the platform to the station house on the Pulaski Road overpass. There was originally a similar entrance from the Keeler Avenue overpass; the entrance from Keeler was closed to cut costs on January 15, 1973, but retained as an exit, and the exit was fully closed on December 28, 1978. The structure for this exit still stands but it is closed to the public.
Cicero is a station on the 'L' system, serving the Blue Line's Forest Park branch. It is located in the median of the Eisenhower Expressway and serving the Austin neighborhood. Originally, Cicero had an additional entrance at Lavergne Avenue, but this was closed on May 16, 1977, by the CTA as a cost-cutting measure. The structure for this exit still stands but it is closed to the public.
Harlem is a station on the 'L' system, serving the Blue Line's Forest Park branch in Forest Park, Illinois. The station was built with an auxiliary entrance at Circle Avenue that was eventually converted to an single turnstile facility. The Circle Avenue entrance reopened as an auxiliary entrance/exit on September 26, 2009, at 4 PM. To the south of the station is the Ferrara Candy Company A Roos chest-making factory was located west of the station and Circle Avenue until it was torn down in 2013 to make way for a new recreation park that opened there in 2018. The Roos company closed for good in 1951.
Forest Park is a station on the Chicago Transit Authority's 'L' system, located in the village of Forest Park, Illinois and serving the Blue Line. Before the Congress Line was built, it served as terminal for the Garfield Line. It is the western terminus of the Forest Park branch. The station was known as Des Plaines until 1994. It is also referred to as the Forest Park Transit Center by Pace because it is a major terminal for Pace buses. The station contains a 1,051-space Park and Ride lot which uses the "Pay and Display" system, in which fees are paid at the lot entrance. It is located south of the Baltimore and Ohio Chicago Terminal Railroad tracks which curve to the north of the station towards Madison Street where the line rechristens itself to the Canadian National Railway's Waukesha Subdivision.
Pulaski is an 'L' station on the CTA's Pink Line, located in the North Lawndale neighborhood. Pulaski opened on June 16, 1902, as part of the Douglas Park branch of the Metropolitan West Side Elevated Railroad. It served as the terminus of that line until its 1907 extension to 48th Avenue.
The Jefferson Park Transit Center is an intermodal passenger transport hub in the Jefferson Park neighborhood of Chicago, Illinois. It serves as a station for rail and also as a bus terminal. Jefferson Park Transit Center's railroad station is on Metra's Union Pacific Northwest Line, with the station located at 4963 North Milwaukee Avenue. Jefferson Park is 9.1 miles (14.6 km) away from Ogilvie Transportation Center in downtown Chicago, the inbound terminus of the Union Pacific Northwest Line. Under Metra's zone-based fare system, Jefferson Park is in zone 2. As of 2018, Jefferson Park is the 97th busiest of Metra's 236 non-downtown stations, with an average of 510 weekday boardings.
Metra: Irving Park 
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