Ashland is an 'L' station on the CTA's Green and Pink Lines. It is an elevated station with two side platforms, located in Chicago's Near West Side neighborhood at 1601 West Lake Street. Just to the west of the station, the Pink Line branches off from the Lake Street branch to follow the Paulina Connector to the Douglas branch. The adjacent stations are California (Green), which is located about 1+1⁄2 miles (2.4 km) to the west, Polk (Pink), which is located about 1 mile (1.6 km) to the south, and Morgan station, approximately 3⁄4 mile (1.2 km) to the east.

The Chicago "L" is the rapid transit system serving the city of Chicago and some of its surrounding suburbs in the U.S. state of Illinois. Operated by the Chicago Transit Authority (CTA), it is the fourth-largest rapid transit system in the United States in terms of total route length, at 102.8 miles (165.4 km) long as of 2014, and the third-busiest rapid transit system in the United States. In 2016, the "L" had 1,492 rail cars, eight different routes, and 145 train stations. In 2023, the system had 117,447,000 rides, or about 373,800 per weekday in the fourth quarter of 2023.