CallataGuidesGet a local business phone number in Delphi, IN
Delphi's area code, prefixes and carriers from NANPA records, and how to put a Delphi number in front of your customers.
- Area code
- 765
- Exchanges
- 5NANPA-assigned
- Carriers
- 5
- Population
- 3,018Census 2024 est.
What area code is Delphi, IN?
Delphi city is a Census place in Carroll County, Indiana, with an estimated 3,018 residents in 2024. All 5 exchanges NANPA lists for its rate center are in area code 765. Delphi is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 765 are dialed as seven digits and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 765 | 5 | 100% | 1997 | none | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Delphi
5 carriers hold the 5 exchanges assigned to Delphi's rate center. Cellco Partnership d/b/a Verizon Wireless - In has the most, with 1. 5 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 |
|---|---|---|
| Cellco Partnership d/b/a Verizon Wireless - In | 1 | 20% |
| Onvoy, LLC - In | 1 | 20% |
| Frontier Midstates, INC. - In | 1 | 20% |
| New Cingular Wireless PCS, LLC - Il | 1 | 20% |
| Ton80 Communications, LLC | 1 | 20% |
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.
Local prefixes for Delphi
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Delphi. The earliest assignment date recorded in the file for these codes is 2004. 1 of the 5 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 765 | 201, 202, 564, 822, 837 |
Source: NANPA utilized central office code file.
When Delphi's exchanges were assigned
The table groups Delphi's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 50% |
| 2020s | 1 | 50% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Rate centers and local calling in Delphi
What a caller sees as "local" is the area code plus prefix. In Delphi, those come from the DELPHI rate center, as recorded by NANPA.
If your business already has a Delphi number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Businesses around Delphi
Delphi is part of the Lafayette-West Lafayette, IN metro area, home to 230,000 people in 2024. County Business Patterns counted 4,577 business establishments in the Lafayette, IN metro area in 2023, employing 83,916 people. The largest sectors by establishment count are retail trade (613), health care and social assistance (574), and accommodation and food services (534).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 185 | 4,384 | 23.7 |
| Full-service restaurants | 154 | 3,816 | 24.8 |
| Physician practices | 123 | — | — |
| Offices of real estate agents and brokers | 101 | 187 | 1.9 |
| Insurance agencies and brokerages | 83 | 304 | 3.7 |
| Dental offices | 72 | 563 | 7.8 |
| Landscaping services | 67 | 327 | 4.9 |
| Plumbing, heating and air-conditioning contractors | 65 | 621 | 9.6 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Delphi business line
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 Delphi 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 18 users, the rounded average establishment size in the Lafayette, IN metro area. At list prices checked September 28, 2026, that is $449.10 a month on Ooma Office Pro and $540.00 on RingCentral RingEX Core. Callata comes to $359.00 a month for 18 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 | $359.00 | $4,308.00 |
| Quo (Starter) | $19.00 per user | $342.00 | $4,104.00 |
| Nextiva (Core) | $23.00 per user | $414.00 | $4,968.00 |
| Ooma (Office Pro) | $24.95 per user | $449.10 | $5,389.20 |
| Dialpad (Standard) | $27.00 per user | $486.00 | $5,832.00 |
| RingCentral (RingEX Core) | $30.00 per user | $540.00 | $6,480.00 |
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 Delphi, IN?
765. All exchanges NANPA lists for Delphi are in 765.
How many phone companies have exchanges in Delphi?
5, holding 5 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Delphi 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 Delphi?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 18 users come to $359.00 a month. For comparison, 18 users on RingCentral RingEX Core list at $540.00 a month (checked September 28, 2026).