Peoria, IL Area Codes

Area codes serving Peoria

Peoria sits in Illinois, part of the Midwest region and the Central Time zone. Its numbers are spread across an overlay of 2 codes that all cover the same ground: 309, 861.

The original code is 309 (in service since 1957). As the area ran low on numbers, regulators added overlay codes on top instead of splitting the city, so longtime residents kept their numbers while new lines received a newer code.

Code	Area served	In service
309	West-central and northwest Illinois including Peoria, Bloomington-Normal and the Quad Cities	January 1, 1957
861	West-central and northwest Illinois including Peoria, Bloomington-Normal and the Quad Cities	February 24, 2023

Nearby cities sharing these area codes

• Bloomington
• Normal
• Moline
• Rock Island
• Pekin
• East Peoria
• Galesburg
• Macomb
• East Moline
• Canton
• Kewanee

How to pick an area code for a new number

When you activate a new line in Peoria, the carrier assigns whichever code has numbers available — you usually can't choose. If a specific code matters to you (for example the prestige of 309), ask the carrier whether any blocks remain, or request a number transfer. All codes here dial identically and cost the same.

Dialing in Peoria

Because Peoria is an overlay area, 10-digit dialing is mandatory: always dial the area code plus the seven-digit number, even for a neighbor. See 10-digit dialing and overlay area codes for the background. For every code in Illinois, visit the Illinois area codes page.