- City of Lockport, Illinois Welcome to the City of Historic Pride's Official Web Site L o c k p o r t O n l i n e Welcome to the City of Lockport's official web site. Established in 1830, Lockport is home to approximately 15, 000 residents in this northern Illinois locale. Steeped in the rich canal heritage of the 1800's, Lockport is a delightful mix of quaint history and modern charm, and has a ...www.lockport.org