331 area code

Get a local phone number in Aurora, IL

Biggest city:

Aurora

State:

Illinois

Major Cities:

Aurora, Geneva, Montgomery, Elburn, Kaneville, Joliet, Bolingbrook, Plainfield, Romeoville, Naperville, Wheaton, Elmhurst, Lombard, Carol Stream, Hanover Park.

Timezone:

Central (GMT -6)

Population:

394,941

Average Income:

$92,579

Zip codes:

60502

60599

Unemployment Rate:

4.90%

Nearby area codes:

630

708

Get a 331 phone number

📲 Get a 331 number: $7/mo

331 area code summary

Area code 331 is an overlay for 630 in Illinois, serving the western suburbs of Chicago. This includes cities such as Naperville, Aurora, Wheaton, and Downers Grove. These suburbs form a vital economic corridor of the Chicago metro area, with strengths in healthcare, education, logistics, and tech. Naperville and Aurora are two of Illinois' largest cities outside of Chicago and are known for their excellent public schools, family-friendly neighborhoods, and affluent, highly educated populations. The region is home to corporate campuses for companies like Nokia, BP, and Edward-Elmhurst Health. While 630 has long been associated with the region, the newer 331 code accommodates the area's rapid growth. A 331 number gives businesses a modern local presence in one of the most economically productive and well-connected suburban markets in the Midwest.

Fun fact 💡

Naperville’s Riverwalk, built in 1981, is a scenic suburban gem.

🏢First Phone Company:

Illinois Bell (later AT&T)

📲 Get a 331 number: $7/mo