CallataGuidesGet a local business phone number in Merrillville, IN
Merrillville's area code, prefixes and carriers from NANPA records, and how to put a Merrillville number in front of your customers.
- Area code
- 219
- Exchanges
- 53NANPA-assigned
- Carriers
- 9
- Population
- 36,989Census 2024 est.
What area code is Merrillville, IN?
Merrillville town is a Census place in Lake County, Indiana, with an estimated 36,989 residents in 2024. All 53 exchanges NANPA lists for its rate center are in area code 219. Merrillville is in the Eastern and Central time zone.
According to NANPA's dialing-plan data, local calls within 219 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 219 | 53 | 100% | 1948 | none | Eastern and Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Merrillville phone exchanges
9 carriers hold the 53 exchanges assigned to Merrillville's rate center. Indiana Bell Tel CO INC has the most, with 25. 40 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Merrillville can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Indiana Bell Tel CO INC | 25 | 47% |
| New Cingular Wireless PCS, LLC - Il | 16 | 30% |
| Onvoy, LLC - In | 4 | 7.5% |
| Level 3 Communications, LLC - In | 3 | 5.7% |
| Indiana Paging Network, INC. | 1 | 1.9% |
| FBN Indiana, INC. - In | 1 | 1.9% |
| Spok, INC. | 1 | 1.9% |
| Midwest Telecom of America, INC. - In | 1 | 1.9% |
| Fractel, LLC | 1 | 1.9% |
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 Merrillville
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Merrillville. The earliest assignment date recorded in the file for these codes is 2002. 15 of the 53 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 219 | 222, 337, 349, 375, 381, 382, 383, 387, 396, 410, 416, 417, 418, 420, 421, 428, 430, 444, 472, 500, 525, 576, 616, 641, 644, 647, 648, 649, 650, 660, 680, 681, 682, 685, 714, 717, 718, 736, 738, 750, 751, 752, 755, 756, 757, 758, 769, 783, 791, 793, 794, 795, 796 |
Source: NANPA utilized central office code file.
When Merrillville's exchanges were assigned
Assignment dates show when each block of Merrillville numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 4 | 18% |
| 2010s | 3 | 14% |
| 2020s | 15 | 68% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Merrillville
NANPA ties every exchange to a rate center. For Merrillville that is MERRILLVL, so a number from one of these exchanges reads as local to people in and around Merrillville.
If your business already has a Merrillville number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Businesses around Merrillville
Merrillville 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.
A Merrillville number on Callata
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 Merrillville, 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 Merrillville, IN?
219. All exchanges NANPA lists for Merrillville are in 219.
How many phone companies have exchanges in Merrillville?
9, holding 53 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Merrillville 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 Merrillville?
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).