The classic 217 area code in service since 1947 now shares its map with 447. The overlay keeps fresh numbers flowing without forcing anyone to give up a long held 217 line, but it also makes ten digit (or 1 + ten digit) dialing mandatory for every local call. Here’s the quick rundown.
New 447 Area Code Overlay
Rather than splitting the map, regulators layered 447 on top of 217. Your existing number stays the same; only new lines may receive 447. Because two codes now serve one geography, every local call must include the area code plus the seven digit number.
217 / 447 Area Code Region
The overlay spans most of central Illinois, including:
- Springfield, Champaign, Urbana, Decatur, Danville
- Quincy, Jacksonville, Effingham, Charleston, Mattoon
- Smaller communities across Sangamon, Champaign, Macon, Adams, Vermilion, Coles, and surrounding counties
Dialing Rules
Landlines: Dial 1 + area code + phone number (11 digits total).
Mobile phones: Dial area code + phone number (10 digits) or 1 + area code + number either works.
Seven digit dialing no longer completes a call.
Mandatory ten digit dialing began February 27 2021.
Key Dates for the 447 Roll Out
| Date | Milestone |
|---|---|
| August 29 2020 | Permissive 7 /10 digit dialing period starts |
| February 27 2021 | Mandatory 10 /11 digit dialing for all local calls |
| March 27 2021 | First 447 numbers become available |
What Stays the Same
- Your current 217 number does not change.
- Local calling areas and pricing remain identical 447 carries no extra fees.
- Three digit services (911, 211, 311, etc.) still dial with three digits.
- Long distance rules and toll rates remain unchanged.
Frequently Asked Questions
Why add 447 instead of splitting the map?
Overlays avoid the cost and confusion of forcing residents and businesses to change long standing numbers.
Will caller ID look odd?
No 447 simply shows a newer assignment within the same central Illinois footprint.
Do mobile users have to dial “1”?
Most wireless carriers complete calls with either ten or eleven digits; landlines generally need the leading “1.”
Does the overlay raise call charges?
No. Rate center boundaries and tariffs stay exactly the same.
