​The City of Naperville is the 5th largest city in Illinois with a population of 146,740 as of July 1, 2019.  Naperville ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois.  Mobility City of DuPage County recognizes the need for mobility equipment repair service, rentals and sales throughout the city of Naperville and beyond.  Mobility City has unsurpassed expertise with wheelchairs, mobility scooters, power chairs, lift chairs, and hospital beds.  Mobility City of DuPage County is in Lombard, Illinois, which is about 11 miles northeast of Naperville.  Call us at (331) 462-0144.