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Get a local business phone number in Baltimore, OH

Baltimore's area codes, prefixes and carriers from NANPA records, and how to put a Baltimore number in front of your customers.

Area code
220 / 740
Exchanges
6NANPA-assigned
Carriers
4
Population
3,089Census 2024 est.

Baltimore area codes

Baltimore village is a Census place in Fairfield County, Ohio, with an estimated 3,089 residents in 2024. NANPA lists 6 exchanges for its rate center across 2 area codes; 220 has the most (3, 50%). 220 is part of an overlay with 740, so a new local number in Baltimore may carry any of those codes depending on which have numbers available. Baltimore is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 220 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Baltimore, OH
Area codeExchanges hereShareIn service sinceOverlay withTime zone
220350%2015740Eastern
740350%1997220Eastern

Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.

Baltimore exchanges by carrier

4 carriers hold the 6 exchanges assigned to Baltimore's rate center. New Cingular Wireless PCS, LLC - Il has the most, with 3. 6 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.

Carriers holding exchanges in Baltimore, OH
Carrier (NANPA operating company)ExchangesShare
New Cingular Wireless PCS, LLC - Il350%
Onvoy, LLC - Oh117%
TWC Ip Enabled Services, LLC117%
Frontier North, INC. - Oh117%

Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.

Exchanges (NPA-NXX) assigned in Baltimore

These are the central office codes NANPA records for Baltimore. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2006. 3 of the 6 were assigned in 2020 or later.

Prefixes assigned in Baltimore, OH
Area codePrefixes (NXX)
220204, 269, 666
740400, 556, 862

Source: NANPA utilized central office code file.

When Baltimore's exchanges were assigned

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

Baltimore, OH: exchanges by decade assigned
Decade assignedExchangesShare
2000s120%
2010s120%
2020s360%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

What makes a number local to Baltimore

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

Keeping an existing Baltimore number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 220 when you pick it.

The local business market

Baltimore is part of the Columbus, OH metro area, home to 2.2 million people in 2024. County Business Patterns counted 46,419 business establishments in the Columbus, OH metro area in 2023, employing 985,064 people. The largest sectors by establishment count are health care and social assistance (6,208), retail trade (5,594), and professional, scientific, and technical services (5,419).

Selected industries in the Columbus, OH metro area, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Limited-service restaurants1,93239,78920.6
Full-service restaurants1,39937,47126.8
Physician practices1,05520,92319.8
Offices of real estate agents and brokers9322,6542.8
Law offices8366,2897.5
Dental offices8017,0228.8
Insurance agencies and brokerages7765,7537.4
Child day care services70010,03714.3

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

Business phone service in Baltimore

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

Porting a number you already use in Baltimore 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.

The comparison below uses 21 users, the rounded average establishment size in the Columbus, OH metro area. At list prices checked September 28, 2026, that is $523.95 a month on Ooma Office Pro and $630.00 on RingCentral RingEX Core. Callata comes to $419.00 a month for 21 users ($99 a month with 5 users included, then $20 per additional user), below both.

Monthly list price for a 21-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$419.00$5,028.00
Quo (Starter)$19.00 per user$399.00$4,788.00
Nextiva (Core)$23.00 per user$483.00$5,796.00
Ooma (Office Pro)$24.95 per user$523.95$6,287.40
Dialpad (Standard)$27.00 per user$567.00$6,804.00
RingCentral (RingEX Core)$30.00 per user$630.00$7,560.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Frequently asked questions

What area code is Baltimore, OH?

Baltimore has exchanges in 220 and 740; 220 has the most.

How many phone companies have exchanges in Baltimore?

4, holding 6 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Baltimore business number?

Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.

How much is a business phone line in Baltimore?

Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 21 users come to $419.00 a month. For comparison, 21 users on RingCentral RingEX Core list at $630.00 a month (checked September 28, 2026).