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Get a local business phone number in Delaware, OH

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

Area code
740 / 220
Exchanges
20NANPA-assigned
Carriers
7
Population
46,521Census 2024 est.

Delaware area codes

Delaware, in Delaware County, Ohio, had a Census-estimated population of 46,521 in July 2024. NANPA lists 20 exchanges for its rate center across 2 area codes; 740 has the most (19, 95%). 740 is part of an overlay with 220, so a new local number in Delaware may carry any of those codes depending on which have numbers available. Delaware 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.

Area codes with exchanges in Delaware, OH
Area codeExchanges hereShareIn service sinceOverlay withTime zone
7401995%1997220Eastern
22015.0%2015740Eastern

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

Who holds Delaware phone exchanges

7 carriers hold the 20 exchanges assigned to Delaware's rate center. Aerial Communications, INC. has the most, with 5. 14 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Delaware can come from any of these blocks; once it is yours, porting lets it move between providers.

Carriers holding exchanges in Delaware, OH
Carrier (NANPA operating company)ExchangesShare
Aerial Communications, INC.525%
Frontier North, INC. - Oh525%
Level 3 Communications, LLC - Oh315%
Cellco Partnership d/b/a Verizon Wireless - Oh315%
New Cingular Wireless PCS, LLC - Il210%
Level 3 Telecom of Ohio, LLC - Oh15.0%
Mcimetro Access Transmission Services LLC - Oh15.0%

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.

Delaware phone prefixes

These are the central office codes NANPA records for Delaware. 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 20 were assigned in 2020 or later.

Prefixes assigned in Delaware, OH
Area codePrefixes (NXX)
220244
740203, 272, 362, 363, 368, 369, 417, 513, 602, 803, 815, 816, 833, 834, 904, 957, 971, 972, 990

Source: NANPA utilized central office code file.

When Delaware's exchanges were assigned

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

Delaware, OH: exchanges by decade assigned
Decade assignedExchangesShare
2000s360%
2020s240%

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

What makes a number local to Delaware

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Delaware's numbers are rated to the DELAWARE rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Delaware number.

Keeping an existing Delaware number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 740 when you pick it.

The local business market

Delaware 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.

A Delaware number on Callata

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 Delaware 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 Columbus, OH metro area, 21 users on RingCentral RingEX Core come to $630.00 a month and on Ooma Office Pro $523.95, at month-to-month list prices checked September 28, 2026. 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 Delaware, OH?

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

How many phone companies have exchanges in Delaware?

7, holding 20 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Delaware 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 Delaware?

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).