309 Area Code
Covers Peoria and nearby communities in Illinois.
(309) 555-0142Area code 309 map
Interactive coverage map for area code 309, centered on Peoria, Illinois
40.6936, -89.5890
Open in OpenStreetMapArea code 309 coverage map — centered on Peoria. Shaded area shows the approximate reach around the primary city.
If you are trying to place Peoria, IL on the map, area code 309 is the one that covers it. It reaches roughly 332,000 people across places such as Peoria, Bloomington, Normal, Moline and more. The region observes Central time, so a number like (309) 555-0142 is on that clock right now. On the ground it spans Peoria, Mclean, Rock Island and nearby counties. It is not currently paired with an overlay code. Local calls inside the 309 area can generally be placed with ten digits, and you do not need a leading 1 for domestic calls. On this page you'll find a live local clock for Peoria, an interactive coverage map, the cities and counties 309 serves, its overlay and neighboring codes, and tips on spotting 309 spam calls.
Cities covered by 309
Cities & neighborhoods
- Peoria
- Bloomington
- Normal
- Moline
- Rock Island
- East Moline
- East Peoria
- Galesburg
- Pekin
Counties
- Peoria
- Mclean
- Rock Island
- Tazewell
- Knox
Looking for the broader picture? See all Illinois area codes.
Nearby & overlay area codes
Overlay codes (same area)
These share 309’s geography — a number in either code can be on the same street.
309 has no overlay code right now.
Neighboring codes
Codes for adjacent regions and metros.
Is a call from 309 a scam?
Area code 309 serves Peoria and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 309 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 309 number from abroad
Every 309 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 309 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 309 555-0142 - Australia
0011 1 309 555-0142 - Japan
010 1 309 555-0142 - Mexico
00 1 309 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 309 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 309: frequently asked questions
Where is the 309 area code located?
The 309 area code is located in Illinois, centered on Peoria. It covers Peoria, Mclean, Rock Island, Tazewell, Knox and nearby communities including Peoria, Bloomington, Normal, Moline, Rock Island, East Moline.
What time zone is 309 in?
Area code 309 is in the Central time zone (UTC-6 (CST) / UTC-5 (CDT)). You can see the exact current local time for Peoria on the live clock above.
What cities use area code 309?
Cities and areas that use 309 include Peoria, Bloomington, Normal, Moline, Rock Island, East Moline. Its primary city is Peoria, IL.
Do I need to dial 1 before 309?
You generally do not need to dial a leading 1 for domestic calls to 309. Ten-digit dialing (the 309 code plus the seven-digit number) is the safest habit.
Is 309 a toll-free or scam number?
No — 309 is a normal geographic area code for Peoria, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 309 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 309?
Area code 309 does not currently have an overlay code; it is not layered on top of another code in the same area.