The familiar 937 area code covering Dayton, Springfield, and much of Ohio’s Miami Valley now shares its map with 326. The overlay guarantees a steady supply of numbers, but it also locks in ten digit (or 1 + ten digit) dialing for every local call. Here’s the essentials.
New 326 Area Code Overlay
Instead of carving the region into smaller zones, Ohio regulators layered 326 on top of 937. Your existing number stays exactly the same; only new lines may receive 326. Because two area codes now serve the same geography, every local call must include the area code plus the seven digit number.
937 / 326 Area Code Region
The overlay spans most of southwestern and west central Ohio, including:
- Dayton, Springfield, Beavercreek, Kettering, Huber Heights
- Troy, Piqua, Xenia, Fairborn, Urbana, Sidney, Greenville
- Communities across Montgomery, Greene, Clark, Miami, Champaign, Shelby, Darke, Preble, and Clinton 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.
Ten digit dialing has been mandatory since February 8 2020.
Key Dates for the 326 Roll Out
| Date | Milestone |
|---|---|
| August 10 2019 | Permissive 7 /10 digit dialing period begins |
| February 8 2020 | Mandatory 10 /11 digit dialing for all calls |
| March 8 2020 | First 326 numbers become available |
What Stays the Same
- Your current 937 number does not change.
- Local calling areas and pricing remain identical 326 adds no extra fees.
- Three digit services (911, 211, 311, etc.) still dial with three digits.
- Long distance rules and toll rates are unaffected.
Frequently Asked Questions
Why add 326 instead of splitting the map?
Overlays spare residents and businesses the hassle of changing long standing numbers while still expanding numbering capacity.
Will caller ID look odd with 326?
No 326 simply shows a newer assignment within the same Miami Valley footprint.
Do mobile users have to dial “1”?
Most carriers complete calls with either ten or eleven digits; landlines generally require the leading “1.”
Does the overlay raise call charges?
No. Rate center boundaries and tariffs remain exactly the same.
