326 area code — Dayton, OH geographic

Data: NANPA public reports, current as of July 28, 2026.

The 326 area code covers Dayton, Ohio, Eastern time zone, and dates back to March 8, 2020. Together with 937 it forms the 326/937 overlay. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.

NANPA lists 83 active NXX prefixes in 326, assigned to 21 carriers. 83 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 56 rate centers (billing localities).

Official projections put exhaust for the 326/937 complex at 4Q 2083.

The dialing plan is 10D for home-NPA local calls and 10D across codes.

Practical takeaway: the 326 label narrows geography to Ohio, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.

Its parent code is 937, which it left in 2020.

Largest localities in 326

FAQ

Why am I getting spam calls from 326 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 326 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 326 number from?

326 is assigned to Dayton and surrounding areas of Ohio in the Eastern time zone. The three digits after the area code (the prefix) narrow it down to a rate center.

Is 326 a toll-free number?

No. 326 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.

Why do 937 and 326 cover the same place?

They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 326/937 complex shares one service area, and local calls are dialed with 10 digits.