CallataGuidesGet a local business phone number in Oak Park, IL
Oak Park's area code, prefixes and carriers from NANPA records, and how to put a Oak Park number in front of your customers.
- Area code
- 708
- Exchanges
- 20NANPA-assigned
- Carriers
- 7
- Population
- 52,947Census 2024 est.
Area codes in Oak Park
Oak Park, in Cook County, Illinois, had a Census-estimated population of 52,947 in July 2024. All 20 exchanges NANPA lists for its rate center are in area code 708. 708 is part of an overlay with 464, so a new local number in Oak Park may carry any of those codes depending on which have numbers available. Oak Park 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.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 708 | 20 | 100% | 1989 | 464 | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Oak Park
7 carriers hold the 20 exchanges assigned to Oak Park's rate center. Illinois Bell Tel CO has the most, with 8. 14 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 |
|---|---|---|
| Illinois Bell Tel CO | 8 | 40% |
| Level 3 Communications, LLC - Il | 5 | 25% |
| Mcimetro Access Transmission Services LLC | 3 | 15% |
| Clear Rate Communications, LLC | 1 | 5.0% |
| Paetec Itel, LLC | 1 | 5.0% |
| Onvoy, LLC | 1 | 5.0% |
| Teleport Communications America, LLC - Il | 1 | 5.0% |
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 Oak Park
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Oak Park. The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 708 | 358, 383, 386, 406, 434, 445, 524, 613, 622, 628, 660, 665, 666, 725, 763, 848, 851, 919, 934, 948 |
Source: NANPA utilized central office code file.
When Oak Park's exchanges were assigned
Assignment dates show when each block of Oak Park numbers was added to the local supply.
| 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.
Rate centers and local calling in Oak Park
Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Oak Park's numbers are rated to the OAK PARK rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Oak Park number.
New local numbers are drawn from carrier inventory, so the exact 708 numbers available change over time; porting an existing number is free.
Who does business near Oak Park
Oak Park 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 Oak Park business line
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.
If you already have a number in Oak Park, 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 Oak Park, IL?
708. All exchanges NANPA lists for Oak Park are in 708.
How many phone companies have exchanges in Oak Park?
7, holding 20 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Oak Park 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 Oak Park?
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).