Active Prefixes in Area Code 815
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 815-473-#### | Watseka | Landline Numbers | Frontier Communicati... |
| 815-474-#### | Joliet | Wireless Numbers | New Cingular Wireles... |
| 815-475-#### | Yorkville | Landline Numbers | Ameritech Illinois... |
| 815-476-#### | Wilmington | Landline Numbers | Ameritech Illinois... |
| 815-477-#### | Crystal Lake | Landline Numbers | Ameritech Illinois... |
| 815-478-#### | Manhattan | Landline Numbers | Ameritech Illinois... |
| 815-479-#### | Crystal Lake | Landline Numbers | Ameritech Illinois... |
| 815-480-#### | Rockford | Wireless Numbers | Usa Mobility Wireles... |
| 815-481-#### | La Grange Park | Landline Numbers | Illinois Valley Cell... |
| 815-482-#### | Woodstock | Wireless Numbers | Sprint Spectrum L.p.... |
| 815-483-#### | Joliet | Wireless Numbers | Sprint Spectrum L.p.... |
| 815-484-#### | Rockford | Landline Numbers | Ameritech Illinois... |
| 815-485-#### | New Lenox | Landline Numbers | Ameritech Illinois... |
| 815-486-#### | Donovan | Landline Numbers | Frontier North, Inc.... |
| 815-487-#### | Plainfield | Landline Numbers | Globalcom, Inc.-il... |
| 815-488-#### | La Grange Park | Landline Numbers | Illinois Valley Cell... |
| 815-489-#### | Rockford | Landline Numbers | Ameritech Illinois... |
| 815-490-#### | Rockford | Landline Numbers | Ameritech Illinois... |
| 815-491-#### | Rockford | Landline Numbers | 365 Wireless, Llc... |
| 815-492-#### | Apple River | Landline Numbers | Frontier North, Inc.... |
| 815-493-#### | Lanark | Landline Numbers | Citizens Telecom Co ... |
| 815-494-#### | Rockford | Wireless Numbers | United States Cellul... |
| 815-495-#### | Leland | Landline Numbers | Frontier North, Inc.... |
| 815-496-#### | Sheridan | Landline Numbers | Frontier North, Inc.... |
| 815-497-#### | Compton | Landline Numbers | Frontier North, Inc.... |
| 815-498-#### | Somonauk | Landline Numbers | Frontier North, Inc.... |
| 815-499-#### | Sterling | Wireless Numbers | United States Cellul... |
| 815-500-#### | Marseilles | Landline Numbers | Sprint Communication... |
| 815-501-#### | DeKalb | Wireless Numbers | Sprint Spectrum L.p.... |
| 815-502-#### | Woodstock | Landline Numbers | Globalcom, Inc.-il... |
Area Code 815 Introduction
| Area Code: | 815 |
| Country: | United States |
| State/Province: | Illinois - IL |
| Major City: | Rockford |
| Time Zone: | Central |
| Average property | $43.4K |
| Average age | 56 y/o |
| Average assets | $43.1K |
| Population density | 57,914 sq mi (149,932 km2) |
| Population | 12,801,539 |
| latitude Longitude: | |
| 36° 58′ N to 42° 30′ N / 87° 30′ W to 91° 31′ W | |
| About 815 : | |
| The 815 Area Code (or Area Code 815) is located in the state of IL. Area Code 815 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 2.27 million unique phone numbers and 7.92 million individuals near the city of La Salle Area code 815 was put into service. In 1957 area code 815 was split, along with a portion of area code 217, to form area code 309. In 2007 area code 815 was overlaid with area code 779. |
|
| Major cities or places | |
| Crystal Lake, IL>De Kalb, IL>Freeport, IL>Joliet, IL>Kankakee, IL>Loves Park, IL>Machesney Park, IL>Mchenry, IL>Rockford, IL>Romeoville, IL>Woodstock, IL | |