Active Prefixes in Area Code 815
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 815-291-#### | Freeport | Wireless Numbers | United States Cellul... |
| 815-292-#### | South Beloit | Landline Numbers | Bergen Telephone Co.... |
| 815-293-#### | Romeoville | Landline Numbers | Ameritech Illinois... |
| 815-294-#### | La Grange Park | Wireless Numbers | Usa Mobility Wireles... |
| 815-295-#### | Kankakee | Wireless Numbers | T-mobile Usa, Inc.... |
| 815-296-#### | Rockford | Wireless Numbers | Usa Mobility Wireles... |
| 815-297-#### | Freeport | Landline Numbers | Frontier North, Inc.... |
| 815-298-#### | Rockford | Wireless Numbers | Cellco Partnership D... |
| 815-299-#### | Rockford | Wireless Numbers | United States Cellul... |
| 815-300-#### | Chicago | Landline Numbers | Ameritech Illinois... |
| 815-301-#### | Crystal Lake | Landline Numbers | Broadwing Communicat... |
| 815-302-#### | Joliet | Wireless Numbers | Sprint Spectrum L.p.... |
| 815-303-#### | Princeton | Landline Numbers | Illinois Valley Cell... |
| 815-304-#### | Kankakee | Landline Numbers | Broadwing Communicat... |
| 815-305-#### | Gardner | Landline Numbers | Broadwing Communicat... |
| 815-306-#### | Lockport | Landline Numbers | Broadwing Communicat... |
| 815-307-#### | McHenry | Landline Numbers | Broadwing Communicat... |
| 815-308-#### | Woodstock | Landline Numbers | Broadwing Communicat... |
| 815-309-#### | Shannon | Landline Numbers | Aero North Communica... |
| 815-310-#### | Utica | Landline Numbers | Broadwing Communicat... |
| 815-312-#### | Rockford | Landline Numbers | Ymax Communications ... |
| 815-313-#### | Ottawa | Landline Numbers | Broadwing Communicat... |
| 815-314-#### | Manhattan | Landline Numbers | Broadwing Communicat... |
| 815-315-#### | Rockford | Landline Numbers | Level 3 Communicatio... |
| 815-316-#### | Rockford | Landline Numbers | Tds Metrocom Inc.-il... |
| 815-317-#### | Crescent City | Landline Numbers | Broadwing Communicat... |
| 815-318-#### | Morris | Landline Numbers | Broadwing Communicat... |
| 815-319-#### | Rockford | Wireless Numbers | United States Cellul... |
| 815-320-#### | Kankakee | Landline Numbers | Peerless Network Of ... |
| 815-321-#### | Woodstock | Landline Numbers | Xo Illinois, Inc.... |
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 | |