Area codes in Dayton, Ohio
Dayton, Ohio uses 2 area codes — 937 and 326. The main Dayton area code is 937.
Area codes serving Dayton
Phone numbers in Dayton are written as ten digits — for example (937) 555-0190 — and fall in the Eastern Time zone.
How Dayton came to have 2 area codes
The original Dayton area code is 937, in service since 1996. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 326 (2020). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Dayton now uses all 2 codes and every local call is dialed with ten digits.
All Ohio area codes · Is a Dayton call a scam?
Nearby cities
- Middletown area codes
- Oxford area codes
- Cincinnati area codes
- Covington area codes
- Columbus area codes
- Delaware area codes
- Lima area codes
- Muncie area codes
More cities in Ohio
- Cleveland area codes
- Toledo area codes
- Akron area codes
- Athens area codes
- Youngstown area codes
- Sandusky area codes
- Ashland area codes
- Brunswick area codes
Frequently asked questions
What is the area code for Dayton?
The main area code for Dayton, Ohio is 937. Dayton is now served by 2 area codes in total: 937, 326.
How many area codes does Dayton have?
Dayton has 2 area codes: 937, 326.
Why does Dayton have more than one area code?
As Dayton used up the numbers available in its original area code (937, in service since 1996), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Dayton number?
Dial all 10 digits — the area code (937 or 326) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.