CallataGuidesGet a local business phone number in Collinsville, IL
Collinsville's area codes, prefixes and carriers from NANPA records, and how to put a Collinsville number in front of your customers.
- Area code
- 618 / 730
- Exchanges
- 93NANPA-assigned
- Carriers
- 14
- Population
- 35,211Census 2024 est.
What area code is Collinsville, IL?
Collinsville township is a Census town in Madison County, Illinois, with an estimated 35,211 residents in 2024. NANPA lists 93 exchanges for its rate center across 2 area codes; 618 has the most (88, 95%). 618 is part of an overlay with 730, so a new local number in Collinsville may carry any of those codes depending on which have numbers available. Collinsville is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 618 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Collinsville exchanges by carrier
14 carriers hold the 93 exchanges assigned to Collinsville's rate center. New Cingular Wireless PCS, LLC - Il has the most, with 34. 59 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Collinsville can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| New Cingular Wireless PCS, LLC - Il | 34 | 37% |
| T-mobile USA, INC. | 18 | 19% |
| Cellco Partnership d/b/a Verizon Wireless - Il | 17 | 18% |
| American Messaging Services, LLC | 7 | 7.5% |
| Illinois Bell Tel CO | 4 | 4.3% |
| Onvoy, LLC | 4 | 4.3% |
| Mcimetro Access Transmission Services LLC - Il | 2 | 2.2% |
| Level 3 Communications, LLC - Il | 1 | 1.1% |
| Paetec Itel, LLC | 1 | 1.1% |
| AT&T Enterprises, LLC | 1 | 1.1% |
| Telnyx LLC | 1 | 1.1% |
| Peerless Network of Illinois, LLC - Il | 1 | 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.
Collinsville phone prefixes
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Collinsville. The earliest assignment date recorded in the file for these codes is 2001. 9 of the 93 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 618 | 210, 223, 250, 301, 304, 321, 324, 325, 334, 338, 341, 343, 344, 345, 346, 363, 365, 369, 381, 401, 402, 406, 407, 409, 410, 420, 444, 447, 477, 484, 491, 514, 520, 530, 531, 540, 541, 550, 551, 558, 560, 567, 570, 578, 580, 581, 593, 604, 606, 616, 623, 631, 660, 666, 670, 691, 696, 741, 750, 772, 779, 781, 782, 789, 791, 792, 795, 799, 803, 806, 830, 855, 900, 910, 915, 920, 929, 954, 960, 971, 972, 973, 974, 975, 977, 978, 979, 980 |
| 730 | 226, 255, 263, 274, 297 |
Source: NANPA utilized central office code file.
When Collinsville's exchanges were assigned
Assignment dates show when each block of Collinsville numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 8 | 38% |
| 2010s | 4 | 19% |
| 2020s | 9 | 43% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Collinsville
What a caller sees as "local" is the area code plus prefix. In Collinsville, those come from the COLLINSVL rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 618 numbers available change over time; porting an existing number is free.
Businesses around Collinsville
Collinsville is part of the St. Louis, MO-IL metro area, home to 2.8 million people in 2024. County Business Patterns counted 69,470 business establishments in the St. Louis, MO-IL metro area in 2023, employing 1,263,674 people. The largest sectors by establishment count are health care and social assistance (10,427), retail trade (8,095), and professional, scientific, and technical services (7,057).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 2,334 | 45,289 | 19.4 |
| Full-service restaurants | 2,019 | 49,930 | 24.7 |
| Agencies providing services for the elderly and persons with disabilities | 1,898 | 16,546 | 8.7 |
| Physician practices | 1,785 | 22,126 | 12.4 |
| Insurance agencies and brokerages | 1,509 | 7,839 | 5.2 |
| Law offices | 1,393 | 10,509 | 7.5 |
| Offices of real estate agents and brokers | 1,099 | 2,523 | 2.3 |
| Landscaping services | 1,092 | 7,504 | 6.9 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Collinsville
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.
If you already have a number in Collinsville, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.
Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.
The comparison below uses 18 users, the rounded average establishment size in the St. Louis, MO-IL 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. On Callata the same 18 people cost $359.00 a month, less than either per-seat plan.
| 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 Collinsville, IL?
Collinsville has exchanges in 618 and 730; 618 has the most.
How many phone companies have exchanges in Collinsville?
14, holding 93 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Collinsville 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 Collinsville?
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).