CallataGuidesGet a local business phone number in Greenfield, OH
Greenfield's area code, prefixes and carriers from NANPA records, and how to put a Greenfield number in front of your customers.
- Area code
- 937
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 5,926Census 2024 est.
Area codes in Greenfield
Greenfield, in Fairfield County, Ohio, had a Census-estimated population of 5,926 in July 2024. All 4 exchanges NANPA lists for its rate center are in area code 937. 937 is part of an overlay with 326, so a new local number in Greenfield may carry any of those codes depending on which have numbers available. Greenfield is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 937 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 937 | 4 | 100% | 1996 | 326 | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Greenfield exchanges by carrier
4 carriers hold the 4 exchanges assigned to Greenfield's rate center. Horizon Services, INC. - Oh has the most, with 1. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Horizon Services, INC. - Oh | 1 | 25% |
| Tier 2 Communications, LLC | 1 | 25% |
| T-mobile USA, INC. | 1 | 25% |
| Frontier North, INC. - Oh | 1 | 25% |
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 Greenfield
These are the central office codes NANPA records for Greenfield. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 937 | 803, 868, 876, 981 |
Source: NANPA utilized central office code file.
When Greenfield's exchanges were assigned
The table groups Greenfield's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 2 | 67% |
| 2010s | 1 | 33% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Greenfield
What a caller sees as "local" is the area code plus prefix. In Greenfield, those come from the GREENFIELD rate center, as recorded by NANPA.
If your business already has a Greenfield number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Greenfield 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).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 1,932 | 39,789 | 20.6 |
| Full-service restaurants | 1,399 | 37,471 | 26.8 |
| Physician practices | 1,055 | 20,923 | 19.8 |
| Offices of real estate agents and brokers | 932 | 2,654 | 2.8 |
| Law offices | 836 | 6,289 | 7.5 |
| Dental offices | 801 | 7,022 | 8.8 |
| Insurance agencies and brokerages | 776 | 5,753 | 7.4 |
| Child day care services | 700 | 10,037 | 14.3 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Greenfield 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 Greenfield 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.
| Provider (plan) | Pricing basis | Per month | Per 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 Greenfield, OH?
937. All exchanges NANPA lists for Greenfield are in 937.
How many phone companies have exchanges in Greenfield?
4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Greenfield 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 Greenfield?
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).