The birthplace of aviation and hometown of the Wright brothers, Dayton is a hub of aerospace and defense anchored by Wright-Patterson Air Force Base. It is covered by the 937 code and its recent overlay. This guide breaks down Dayton’s 937 and 326 codes, the required 10-digit dialing, major ZIP codes, and the scam calls residents should watch for.
Dayton Area Codes at a Glance
| Detail | Information |
|---|---|
| Primary Area Code(s) | 937 |
| Overlay Area Code(s) | 326 |
| Time Zone | Eastern Time (ET) – EST / EDT |
| Major County | Montgomery County |
| Dialing Format | 10-digit dialing required |
Area Code Breakdown & District Mapping
937 – Dayton’s Primary Code
Area code 937 was created in 1996 when it split from 513, serving western and southwestern Ohio including Dayton, Springfield, and Piqua. It is Dayton’s primary code and anchors Montgomery County.
326 – Dayton Overlay
Area code 326 is the 2022 overlay for the 937 region, sharing the same southwestern-Ohio geography. New Dayton lines may be issued a 326 number, fully local to existing 937 numbers.
Neighborhoods & Local Coverage
Dayton’s 937/326 codes cover a city defined by innovation along the Great Miami River. Downtown holds the Oregon Historic District — the city’s oldest neighborhood, now an arts and entertainment hub — along with the RiverScape MetroPark. The University of Dayton anchors the south side of the city.
Beyond downtown, the same codes reach the historic St. Anne’s Hill and South Park districts, the aviation heritage sites tied to the Wright brothers, and neighboring Montgomery County communities like Kettering, Huber Heights, and Beavercreek. The 937/326 codes tie the whole Miami Valley region together.
Local Dialing Rules & International Format
Dayton and the 937 region have required 10-digit dialing since the 326 overlay launched — always dial the area code plus the 7-digit number. Cincinnati to the south uses a separate code, 513, with its own overlay, 283.
To call Dayton from outside the United States, dial your country’s exit code, then the U.S. country code +1, followed by the 10-digit number (for example, +1 937 XXX-XXXX). From inside the U.S. and Canada, simply dial 1 before the 10-digit number for long-distance calls.
Major ZIP Codes Covered
The 937 service area spans many of Dayton’s core ZIP codes, including 45402, 45403, 45404, 45405, 45406, 45409, 45410, and 45417.
Spam & Scam Call Warnings in Dayton
Dayton residents report neighbor-spoofing robocalls faking a local 937 prefix, plus fake utility-shutoff threats from callers posing as AES Ohio. Auto-warranty and Medicare scams are also common across the Miami Valley.
| Scam Type | What to Watch For |
|---|---|
| Neighbor Spoofing | Calls that mimic a local 937 prefix to look familiar. |
| Utility / Toll Scams | Threats to shut off power or demand toll payment via gift cards. |
| IRS / Government | Robocalls claiming legal action — agencies never call to demand instant payment. |
Red flag: Any caller who pressures you to pay immediately with gift cards, wire transfers, or cryptocurrency is almost certainly running a scam. Hang up and verify through an official number.
↑ See the complete list of All US Area Codes by State for every code across the country.
Nearby & Related Ohio Cities
Frequently Asked Questions
What area code is Dayton, OH?
Dayton uses area code 937 and its overlay 326, both covering the Miami Valley.
Is 326 a Dayton or Cincinnati area code?
326 is the Dayton overlay, layered over the 937 region in 2022. It is not a Cincinnati code — Cincinnati uses 513 with the overlay 283.
Do I need to dial 10 digits in Dayton?
Yes. With the 326 overlay active, all local calls in the 937 region require 10-digit dialing.
What time zone is Dayton in?
Dayton observes Eastern Time (EST/EDT), the same as the rest of Ohio.
Does the 937 area code cover Springfield, OH?
Yes. Beyond Dayton, the 937/326 codes also cover Springfield, Piqua, Troy, and much of the Miami Valley in southwestern Ohio, all under the same 10-digit dialing rules.
Stay Safe & Explore More
- Verify an unknown caller in our Scam Alerts directory.
- Comparing nationwide numbers? See our Toll-Free Numbers guides.