As of 2018[update], Oak Park is the 52nd busiest of the 236 non-downtown stations in the Metra system, with an average of 991 weekday boardings.

[1] It is the final stop for most UP West trains before the terminus at Ogilvie Transportation Center.

The Chicago Transit Authority's Green Line ends at Harlem/Lake and is connected directly to this station at Marion Street.

The north platform, which services inbound trains, is sheltered and has assorted benches.

The island platform to the south, which services outbound trains, has benches, though the access ramp from the concourse is sheltered and enclosed.