Illinois · Central Time
447 Area Code
Area code 447 is in Illinois, serving central Illinois including Springfield, Champaign-Urbana, Decatur and Quincy. It is in the Central Time zone. It shares its territory with overlay code 217, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 447 area code?
447 is a Illinois area code covering central Illinois including Springfield, Champaign-Urbana, Decatur and Quincy. In the wider directory it sits in the Midwest region.
Cities in the 447 area code
- Springfield
- Champaign
- Decatur
- Urbana
- Quincy
- Danville
- Charleston
- Mattoon
- Jacksonville
- Effingham
- Taylorville
- Lincoln
Counties served by 447
Sangamon County, Champaign County, Macon County, Adams County, Vermilion County, Coles County, Morgan County, Effingham County, Christian County and Logan County.
447 overlay codes and dialing
The 447 territory is covered by an overlay of 2 area codes: 217, 447. All of them serve the same geographic area, and the original code is 217. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 447 area code
447 went into service on March 27, 2021 as an overlay of 217, relieving number exhaustion in the Springfield area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 447 a scam or spam risk?
447 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 447 number on your screen is no guarantee the caller is in Springfield, IL or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Illinois area codes
Explore more
See every code in Illinois, compare codes across the Midwest region, or view all Central Time codes. You can also browse the 4XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
447 area code FAQ
Where is the 447 area code?
The 447 area code is in Illinois, covering central Illinois including Springfield, Champaign-Urbana, Decatur and Quincy, in the Midwest region.
What cities are in the 447 area code?
Cities in the 447 area code include Springfield, Champaign, Decatur, Urbana, Quincy, Danville, Charleston, Mattoon, Jacksonville and Effingham.
What time zone is 447 in?
447 is in the Central Time zone.
What is the overlay for the 447 area code?
447 shares its territory with 217. Both codes (217, 447) serve the same area, so 10-digit dialing is required for every call.
When did the 447 area code start?
447 went into service on March 27, 2021 as an overlay of 217.
Do I have to dial 10 digits for 447?
Yes. Because 447 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 447 a toll-free or premium code?
No. 447 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.