CallataGuidesGet a local business phone number in New Haven, CT
New Haven's area codes, prefixes and carriers from NANPA records, and how to put a New Haven number in front of your customers.
- Area code
- 203 / 475
- Exchanges
- 188NANPA-assigned
- Carriers
- 23
- Population
- 137,562Census 2024 est.
New Haven area codes
New Haven city is a Census place in South Central Connecticut Planning Region, Connecticut, with an estimated 137,562 residents in 2024. NANPA lists 188 exchanges for its rate center across 2 area codes; 203 has the most (145, 77%). 203 is part of an overlay with 475, so a new local number in New Haven may carry any of those codes depending on which have numbers available. New Haven is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 203 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
New Haven exchanges by carrier
23 carriers hold the 188 exchanges assigned to New Haven's rate center. Southern New England Telco d/b/a Frontier Comm of CT has the most, with 72. 116 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.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Southern New England Telco d/b/a Frontier Comm of CT | 72 | 38% |
| Cellco Partnership d/b/a Verizon Wireless - CT | 28 | 15% |
| Omnipoint Communications, INC. - CT | 21 | 11% |
| New Cingular Wireless PCS, LLC - DC | 18 | 9.6% |
| Onvoy, LLC - CT | 9 | 4.8% |
| Teleport Communications America, LLC - CT | 5 | 2.7% |
| Level 3 Communications, LLC - CT | 5 | 2.7% |
| Paetec Itel, LLC | 5 | 2.7% |
| Metropcs, INC. | 5 | 2.7% |
| American Messaging Services, LLC | 4 | 2.1% |
| Bandwidth.com CLEC, LLC - CT | 2 | 1.1% |
| Spok, INC. | 2 | 1.1% |
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 New Haven
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to New Haven's rate center (NEW HAVEN). The earliest assignment date recorded in the file for these codes is 2001. 21 of the 188 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 203 | 200, 201, 214, 215, 230, 234, 239, 248, 281, 285, 287, 288, 298, 314, 361, 370, 376, 387, 389, 390, 392, 393, 397, 401, 404, 407, 410, 412, 415, 430, 432, 435, 436, 444, 464, 466, 467, 468, 469, 477, 479, 492, 494, 495, 497, 498, 499, 500, 503, 506, 507, 508, 530, 535, 553, 562, 582, 584, 589, 603, 605, 606, 619, 623, 624, 627, 640, 641, 645, 654, 657, 668, 671, 672, 675, 676, 680, 684, 687, 688, 691, 710, 737, 745, 747, 752, 764, 765, 766, 771, 772, 773, 776, 777, 780, 781, 782, 784, 785, 786, 787, 789, 795, 799, 800, 804, 809, 812, 815, 821, 823, 824, 833, 836, 843, 848, 850, 859, 865, 867, 868, 887, 889, 891, 901, 902, 903, 907, 909, 915, 927, 928, 931, 932, 933, 934, 936, 937, 946, 974, 980, 985, 988, 996, 999 |
| 475 | 201, 202, 209, 220, 224, 227, 230, 234, 238, 241, 246, 247, 254, 261, 267, 287, 300, 301, 306, 308, 317, 318, 321, 331, 352, 355, 365, 372, 375, 379, 384, 387, 390, 392, 402, 414, 434, 441, 480, 655, 766, 800, 837 |
Source: NANPA utilized central office code file.
When New Haven's exchanges were assigned
The table groups New Haven's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 11 | 17% |
| 2010s | 31 | 49% |
| 2020s | 21 | 33% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to New Haven
NANPA ties every exchange to a rate center. For New Haven that is NEW HAVEN, so a number from one of these exchanges reads as local to people in and around New Haven.
Keeping an existing New Haven number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 203 when you pick it.
The local business market
New Haven is part of the New Haven, CT metro area, home to 577,000 people in 2024. County Business Patterns counted 13,779 business establishments in the New Haven, CT metro area in 2023, employing 263,675 people. The largest sectors by establishment count are health care and social assistance (1,958), retail trade (1,860), and other services (except public administration) (1,537).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 566 | 9,297 | 16.4 |
| Limited-service restaurants | 494 | 6,097 | 12.3 |
| Physician practices | 418 | — | — |
| Law offices | 355 | 2,160 | 6.1 |
| Landscaping services | 236 | 924 | 3.9 |
| Dental offices | 228 | 1,824 | 8.0 |
| Insurance agencies and brokerages | 205 | 1,534 | 7.5 |
| Plumbing, heating and air-conditioning contractors | 196 | 1,595 | 8.1 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in New Haven
For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.
Porting a number you already use in New Haven 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.
A 19-person team is the benchmark here, the rounded average establishment size in the New Haven, CT metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $570.00 a month and Ooma Office Pro $474.05. Callata comes to $379.00 a month for 19 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 | $379.00 | $4,548.00 |
| Quo (Starter) | $19.00 per user | $361.00 | $4,332.00 |
| Nextiva (Core) | $23.00 per user | $437.00 | $5,244.00 |
| Ooma (Office Pro) | $24.95 per user | $474.05 | $5,688.60 |
| Dialpad (Standard) | $27.00 per user | $513.00 | $6,156.00 |
| RingCentral (RingEX Core) | $30.00 per user | $570.00 | $6,840.00 |
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 New Haven, CT?
New Haven has exchanges in 203 and 475; 203 has the most.
How many phone companies have exchanges in New Haven?
23, holding 188 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing New Haven 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 New Haven?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 19 users come to $379.00 a month. For comparison, 19 users on RingCentral RingEX Core list at $570.00 a month (checked September 28, 2026).