The area code 815 is located in Joliet, Illinois.
Area code 815 is a significant telephone area code located in Northern Illinois, covering key cities like Joliet, Rockford, and Aurora. Established in 1947, this area code has served as a vital link for residents and businesses alike. Joliet, known for its historic Route 66 and the famous Joliet Correctional Center, showcases the region's unique blend of history and modern living. Fun fact: Joliet is home to the Minooka Community High School, which boasts an impressive sports program and a devoted community spirit! With its mix of urban centers and scenic landscapes, area code 815 is a pivotal part of Illinois.