Mayfair is a commuter railroad station on Metra's Milwaukee District/North Line on the border between Albany Park and Portage Park community areas of Chicago. The station is officially located at 4357 North Cicero Avenue (Illinois Route 50), however the actual location is the northeast corner of West Pensacola and North Kilpatrick Avenues. It is 9.0 miles (14.5 km) away from Union Station, the southern terminus of the line, and serves commuters between Union Station and Fox Lake, Illinois.