815 area code

Get a local phone number in Rockford, IL

Biggest city:

Rockford

State:

Illinois

Major Cities:

Rockford, Joliet, DeKalb

Timezone:

Central (GMT -6)

Population:

152,871

Average Income:

$64,532

Zip codes:

61101

61126

Unemployment Rate:

6.90%

Nearby area codes:

217

219

Get a 815 phone number

📲 Get a 815 number: $7/mo

815 area code summary

Area code 815 serves northern Illinois outside the immediate Chicago metro area, including Rockford, Joliet, DeKalb, and parts of the Illinois Valley. The region has a rich industrial history, with Rockford known for its manufacturing heritage and aerospace sector. Joliet, a growing city southwest of Chicago, features a strong logistics and transportation presence due to its proximity to major highways and rail hubs. DeKalb is home to Northern Illinois University (NIU), contributing a steady student and academic population to the local economy. The area also benefits from access to natural attractions like Starved Rock State Park and the Rock River. While some communities are increasingly suburbanized due to Chicagoland expansion, others retain a distinctly rural or small-town feel. The 815 code was one of the original area codes introduced in 1947, and due to demand, it was overlaid by area code 779 in 2007. Businesses using 815 signal ties to traditional Midwestern values and hard-working local economies.

Fun fact 💡

Rockford’s Midway Village Museum, since 1976, is a 815 history site.

🏢First Phone Company:

Illinois Bell (later AT&T)

📲 Get a 815 number: $7/mo