815 Area Code

The 815 area code is a telephone area code in the state of Illinois, USA. It was established in 1947 as one of the original area codes under the North American Numbering Plan. The 815 area code serves northern Illinois outside the Chicago metropolitan area, including cities such as Rockford, Joliet, and DeKalb.

Understanding the 815 Area Code

The 815 area code covers a mix of urban, suburban, and rural regions in northern Illinois. It serves residential areas, business districts, educational institutions, and industrial centers. Major cities like Rockford and Joliet act as hubs for commerce, education, and transportation within this area code.

815 Area Code Map and Location

The 815 area code map includes several counties in northern Illinois, including:

  • Winnebago County
  • Boone County
  • DeKalb County
  • Kendall County
  • Will County
  • LaSalle County

Major Cities in the 815 Area Code

  • Rockford
  • Joliet
  • DeKalb
  • LaSalle
  • Ottawa
  • Peru
  • Rockton
  • Freeport
  • Sycamore
  • Morris

ZIP Codes in the 815 Area Code

Some common ZIP codes include:

  • 61101 - Rockford, IL
  • 60435 - Joliet, IL
  • 60115 - DeKalb, IL
  • 61301 - LaSalle, IL
  • 61350 - Ottawa, IL
  • 61354 - Peru, IL
  • 61087 - Rockton, IL
  • 61032 - Freeport, IL
  • 60178 - Sycamore, IL
  • 60450 - Morris, IL

Time Zone

The 815 area code is located in the Central Time Zone (CT):

  • Standard Time: UTC -6
  • Daylight Saving Time: UTC -5

Dialing & Phone Service

  • Overlay Code: 779
  • Local Dialing: 10-digit dialing is required
  • Long-Distance: 1 + 815 + 7-digit number
  • International: +1 815 + local number
  • Services: Landline, Mobile, VoIP, Business

What Area Code is 815? / Where is Area Code 815?

What area code is 815? � The 815 area code is a northern Illinois telephone area code serving cities outside the Chicago metro area, including Rockford and Joliet.

Where is area code 815 located? � The 815 area code is located in northern Illinois, USA, covering cities such as Rockford, Joliet, DeKalb, and Ottawa.

Frequently Asked Questions (FAQ)

What is the 815 area code?

The 815 area code is a telephone area code serving northern Illinois outside Chicago, including Rockford, Joliet, and DeKalb.

When was the 815 area code created?

It was established in 1947 as one of Illinois' original area codes.

Where is area code 815 located?

It serves northern Illinois, including cities like Rockford, Joliet, and DeKalb.

Does 815 have overlays?

Yes, the 815 area code is overlaid with 779.

What time zone is 815 in?

Central Time Zone (CT).

815 Area Code