Mayfair is a Metra station located on the Milwaukee District North Line on the border between the Albany Park and Portage Park community areas of Chicago, Illinois. The station is officially located at 4357 North Cicero Avenue, 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 Chicago Union Station, the southern terminus of the line, and serves commuters between Union Station and Fox Lake, Illinois. In Metra's zone-based fare system, Mayfair is in zone 2. As of 2018, Mayfair is the 147th busiest of Metra's 236 non-downtown stations, with an average of 281 weekday boardings.