This article examines the relationship between parking management and commuter rail transit using the Chicago metropolitan area in northeastern Illinois as a case example. Commuter rail transit and parking management are discussed within the broader context of transportation planning in the Chicago metropolitan region. Commuter rail ridership, mode of station access, and parking utilization rates are compared. Related air quality, social equity, and land-use concerns are reviewed. There are no simple solutions to the problem of spillover parking around commuter rail stations. The construction of new parking can be expensive. Raising parking prices may induce spillover parking. Doing nothing to address observed parking shortages may inhibit ridership. Shared parking is an excellent compromise in many situations, but even this is far from a universal solution.