Get a local business phone number in Marietta, OH

What area code is Marietta, OH?

With 13,039 residents in the Census 2024 estimate, Marietta sits in Washington County, Ohio. NANPA lists 18 exchanges for its rate center across 2 area codes; 740 has the most (16, 89%). 740 is part of an overlay with 220, so a new local number in Marietta may carry any of those codes depending on which have numbers available. Marietta is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 740 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Phone carriers in Marietta

10 carriers hold the 18 exchanges assigned to Marietta's rate center. Cellco Partnership d/b/a Verizon Wireless - Oh has the most, with 4. 13 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Marietta can come from any of these blocks; once it is yours, porting lets it move between providers.

Local prefixes for Marietta

These are the central office codes NANPA records for Marietta. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. 2 of the 18 were assigned in 2020 or later.

When Marietta's exchanges were assigned

The table groups Marietta's exchanges by the decade NANPA recorded them as assigned.

How local numbers work in Marietta

NANPA ties every exchange to a rate center. For Marietta that is MARIETTA, so a number from one of these exchanges reads as local to people in and around Marietta.

New local numbers are drawn from carrier inventory, so the exact 740 numbers available change over time; porting an existing number is free.

Who does business near Marietta

Marietta is part of the Marietta, OH micropolitan area, home to 58,332 people in 2024. County Business Patterns counted 1,378 business establishments in the Marietta, OH micropolitan area in 2023, employing 23,113 people. The largest sectors by establishment count are retail trade (218), health care and social assistance (166), and other services (except public administration) (147).

Business phone service in Marietta

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in Marietta is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Marietta, OH micropolitan area, 17 users on RingCentral RingEX Core come to $510.00 a month and on Ooma Office Pro $424.15, at month-to-month list prices checked September 28, 2026. Callata comes to $339.00 a month for 17 users ($99 a month with 5 users included, then $20 per additional user), below both.