CallataGuidesGet a local business phone number in Utica, IL
Utica's area code, prefixes and carriers from NANPA records, and how to put a Utica number in front of your customers.
- Area code
- 815
- Exchanges
- 5NANPA-assigned
- Carriers
- 4
- Population
- 1,945Census 2024 est.
Utica area codes
Utica township is a Census town in LaSalle County, Illinois, with an estimated 1,945 residents in 2024. All 5 exchanges NANPA lists for its rate center are in area code 815. 815 is part of an overlay with 779, so a new local number in Utica may carry any of those codes depending on which have numbers available. Utica is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 815 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 |
|---|---|---|---|---|---|
| 815 | 5 | 100% | 1947 | 779 | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Utica
4 carriers hold the 5 exchanges assigned to Utica's rate center. Level 3 Communications, LLC - Il has the most, with 2. 5 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 |
|---|---|---|
| Level 3 Communications, LLC - Il | 2 | 40% |
| Bandwidth.com CLEC, LLC - Il | 1 | 20% |
| Illinois Bell Tel CO | 1 | 20% |
| RCN Telecom Services of Illinios, INC. - Il | 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.
Exchanges (NPA-NXX) assigned in Utica
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Utica. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 815 | 310, 371, 408, 667, 691 |
Source: NANPA utilized central office code file.
What makes a number local to Utica
What a caller sees as "local" is the area code plus prefix. In Utica, those come from the UTICA rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 815 numbers available change over time; porting an existing number is free.
Businesses around Utica
Utica is part of the Ottawa, IL micropolitan area, home to 147,000 people in 2024. County Business Patterns counted 3,355 business establishments in the Ottawa, IL micropolitan area in 2023, employing 44,039 people. The largest sectors by establishment count are retail trade (486), accommodation and food services (429), and other services (except public administration) (403).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 148 | 1,643 | 11.1 |
| Limited-service restaurants | 105 | 1,866 | 17.8 |
| Drinking places | 91 | 410 | 4.5 |
| Insurance agencies and brokerages | 67 | 234 | 3.5 |
| General automotive repair shops | 55 | 282 | 5.1 |
| Landscaping services | 54 | 139 | 2.6 |
| General freight trucking companies (local) | 53 | 158 | 3.0 |
| Law offices | 52 | 223 | 4.3 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Utica
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 Utica, 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 13 users, the rounded average establishment size in the Ottawa, IL micropolitan area. At list prices checked September 28, 2026, that is $324.35 a month on Ooma Office Pro and $390.00 on RingCentral RingEX Core. On Callata the same 13 people cost $259.00 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 | $259.00 | $3,108.00 |
| Quo (Starter) | $19.00 per user | $247.00 | $2,964.00 |
| Nextiva (Core) | $23.00 per user | $299.00 | $3,588.00 |
| Ooma (Office Pro) | $24.95 per user | $324.35 | $3,892.20 |
| Dialpad (Standard) | $27.00 per user | $351.00 | $4,212.00 |
| RingCentral (RingEX Core) | $30.00 per user | $390.00 | $4,680.00 |
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 Utica, IL?
815. All exchanges NANPA lists for Utica are in 815.
How many phone companies have exchanges in Utica?
4, holding 5 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Utica 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 Utica?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 13 users come to $259.00 a month. For comparison, 13 users on RingCentral RingEX Core list at $390.00 a month (checked September 28, 2026).