CallataGuidesGet a local business phone number in Thornton, IL
Thornton's area codes, prefixes and carriers from NANPA records, and how to put a Thornton number in front of your customers.
- Area code
- 708 / 464
- Exchanges
- 6NANPA-assigned
- Carriers
- 6
- Population
- 152,759Census 2024 est.
Area codes in Thornton
Thornton, in Cook County, Illinois, had a Census-estimated population of 152,759 in July 2024. NANPA lists 6 exchanges for its rate center across 2 area codes; 708 has the most (5, 83%). 708 is part of an overlay with 464, so a new local number in Thornton may carry any of those codes depending on which have numbers available. Thornton is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 708 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits.
Who holds Thornton phone exchanges
6 carriers hold the 6 exchanges assigned to Thornton's rate center. Fractel, LLC has the most, with 1. 6 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Thornton can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Fractel, LLC | 1 | 17% |
| Teleport Communications America, LLC - Il | 1 | 17% |
| Level 3 Communications, LLC - Il | 1 | 17% |
| Mcimetro Access Transmission Services LLC | 1 | 17% |
| Paetec Itel, LLC | 1 | 17% |
| Illinois Bell Tel CO | 1 | 17% |
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 Thornton
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Thornton's rate center (THORNTON). The earliest assignment date recorded in the file for these codes is 2001. 1 of the 6 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 464 | 999 |
| 708 | 462, 564, 740, 874, 877 |
Source: NANPA utilized central office code file.
When Thornton's exchanges were assigned
Assignment dates show when each block of Thornton numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 2 | 67% |
| 2020s | 1 | 33% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Thornton
What a caller sees as "local" is the area code plus prefix. In Thornton, those come from the THORNTON rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 708 numbers available change over time; porting an existing number is free.
The local business market
Thornton is part of the Chicago-Naperville-Elgin, IL-IN metro area, home to 9.4 million people in 2024. County Business Patterns counted 248,519 business establishments in the Chicago, IL-IN metro area in 2023, employing 4,285,971 people. The largest sectors by establishment count are professional, scientific, and technical services (32,828), health care and social assistance (29,768), and retail trade (25,308).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 8,179 | 139,869 | 17.1 |
| Full-service restaurants | 7,371 | 149,532 | 20.3 |
| Law offices | 5,865 | 46,449 | 7.9 |
| Physician practices | 5,693 | 80,101 | 14.1 |
| Residential remodelers | 5,230 | 12,655 | 2.4 |
| Dental offices | 4,881 | 30,767 | 6.3 |
| Offices of real estate agents and brokers | 4,252 | 11,786 | 2.8 |
| General freight trucking companies (local) | 4,040 | 14,869 | 3.7 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Thornton business line
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.
If you already have a number in Thornton, 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 17 users, the rounded average establishment size in the Chicago, IL-IN metro area. At list prices checked September 28, 2026, that is $424.15 a month on Ooma Office Pro and $510.00 on RingCentral RingEX Core. On Callata the same 17 people cost $339.00 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 | $339.00 | $4,068.00 |
| Quo (Starter) | $19.00 per user | $323.00 | $3,876.00 |
| Nextiva (Core) | $23.00 per user | $391.00 | $4,692.00 |
| Ooma (Office Pro) | $24.95 per user | $424.15 | $5,089.80 |
| Dialpad (Standard) | $27.00 per user | $459.00 | $5,508.00 |
| RingCentral (RingEX Core) | $30.00 per user | $510.00 | $6,120.00 |
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 Thornton, IL?
Thornton has exchanges in 708 and 464; 708 has the most.
How many phone companies have exchanges in Thornton?
6, holding 6 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Thornton 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 Thornton?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 17 users come to $339.00 a month. For comparison, 17 users on RingCentral RingEX Core list at $510.00 a month (checked September 28, 2026).