What Is The Area Code 815 - It covers roughly 7,579,620 unique phone numbers and 3,845,107 individuals near the cities of rockford, joliet, and kankakee. The 815 area code serves rockford, chicago, arlington heights, freeport, dekalb, covering 214 zip codes in 31 counties. Web implemented in 1947, the 815 area code has a history that spans decades in northern illinois. As a result, many cities in illinois must now share the 815 and 779 area codes. Browse area code 815 phone numbers, prefixes and exchanges. Web area code 815 is located in illinois. It also covers 26 counties, including winnebago county, will county, mchenry county, la salle county, and kankakee county. On january 1st, 1947 it went into service. Web the 815 area code is located in the state of illinois. View the 815 area code map, major cities, location, timezone and more on teracodes.com.
Web area code 815 serves the state of illinois. As a result, many cities in illinois must now share the 815 and 779 area codes. Web the 815 area code is located in the state of illinois. Web 301 rows area code 815 has 700 prefixes. Population increases in the beginning of 2000 made it necessary to add the 779 area code overlay to the 815 area code. It also covers 26 counties, including winnebago county, will county, mchenry county, la salle county, and kankakee county. Dialing pattern for local calls within the same npa (area code) is 1+10d. Web area code 815 is located in illinois. It covers roughly 7,579,620 unique phone numbers and 3,845,107 individuals near the cities of rockford, joliet, and kankakee. 815 is a general purpose code. This area code was assigned on january 1st, 1947. 815 service area does overlap with 779 area codes. It covers 196 cities, including chicago, joliet, rockford, glenview, and plainfield. View the 815 area code map, major cities, location, timezone and more on teracodes.com. Web area code 815 is located in nw illinois and includes rockford. On january 1st, 1947 it went into service. Browse area code 815 phone numbers, prefixes and exchanges. Web implemented in 1947, the 815 area code has a history that spans decades in northern illinois. The 815 area code serves rockford, chicago, arlington heights, freeport, dekalb, covering 214 zip codes in 31 counties. A full list of covered cities and counties is below including its prefix and population coverage.