Area code 815 serves the vibrant region of northern Illinois, encompassing the charming city of Harvard, known for its welcoming community and historical charm. This area code is a perfect choice for business owners aiming to establish a local presence, as it signifies connection to a region rich in agricultural and industrial heritage. Being part of this area code associates businesses with a supportive network of residents and potential customers who value local engagement. Its inclusion of diverse cities and towns makes it an excellent base for businesses seeking to reach a broad and dynamic market in Illinois.