Call Mount Prospect Locksmith for your free estimate today! When you need Mount Prospect Locksmith Service we are your fast and affordable locksmith in Mount Prospect Illinois We can help with rekeys, lock changes, new keys, transponder keys and more. We offer home, auto and business locksmith help. We also serve Aurora, Naperville, Elgin and Waukegan, Illinois. Let us help keep your car, house and business secure. Dispatch Address:13 E Northwest Hwy, Mt Prospect, IL 60056