Ohio · Eastern Time
740 Area Code
Area code 740 is in Ohio, serving southeastern and east-central Ohio outside the Columbus metro, including Newark and Zanesville. It is in the Eastern Time zone. It shares its territory with overlay code 220, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 740 area code?
740 is a Ohio area code covering southeastern and east-central Ohio outside the Columbus metro, including Newark and Zanesville. In the wider directory it sits in the Midwest region.
Cities in the 740 area code
- Newark
- Lancaster
- Zanesville
- Marion
- Delaware
- Chillicothe
- Athens
- Portsmouth
- Mount Vernon
- Cambridge
- Marietta
- Steubenville
- Circleville
- Heath
Counties served by 740
Licking County, Fairfield County, Muskingum County, Marion County, Delaware County, Ross County, Athens County, Scioto County, Knox County and Washington County.
740 overlay codes and dialing
The 740 territory is covered by an overlay of 2 area codes: 220, 740. All of them serve the same geographic area, and the original code is 740. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 740 area code
740 went into service on December 6, 1997, created when it was split from 614. It serves Newark and the surrounding part of Ohio, and today shares its territory with overlay code 220. For how codes are created, split, and overlaid, see how area codes work.
Is 740 a scam or spam risk?
740 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 740 number on your screen is no guarantee the caller is in Newark, OH or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Ohio area codes
Explore more
See every code in Ohio, compare codes across the Midwest region, or view all Eastern Time codes. You can also browse the 7XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
740 area code FAQ
Where is the 740 area code?
The 740 area code is in Ohio, covering southeastern and east-central Ohio outside the Columbus metro, including Newark and Zanesville, in the Midwest region.
What cities are in the 740 area code?
Cities in the 740 area code include Newark, Lancaster, Zanesville, Marion, Delaware, Chillicothe, Athens, Portsmouth, Mount Vernon and Cambridge.
What time zone is 740 in?
740 is in the Eastern Time zone.
What is the overlay for the 740 area code?
740 shares its territory with 220. Both codes (220, 740) serve the same area, so 10-digit dialing is required for every call.
When did the 740 area code start?
740 went into service on December 6, 1997.
Do I have to dial 10 digits for 740?
Yes. Because 740 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 740 a toll-free or premium code?
No. 740 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.