CallataGuidesGet a local business phone number in Iowa City, IA
Iowa City's area code, prefixes and carriers from NANPA records, and how to put a Iowa City number in front of your customers.
- Area code
- 319
- Exchanges
- 50NANPA-assigned
- Carriers
- 15
- Population
- 76,710Census 2024 est.
Area codes in Iowa City
Iowa City city is a Census place in Johnson County, Iowa, with an estimated 76,710 residents in 2024. All 50 exchanges NANPA lists for its rate center are in area code 319. Iowa City is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 319 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 |
|---|---|---|---|---|---|
| 319 | 50 | 100% | 1947 | none | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Iowa City exchanges by carrier
15 carriers hold the 50 exchanges assigned to Iowa City's rate center. Qwest Corporation has the most, with 17. 31 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Iowa City can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Qwest Corporation | 17 | 34% |
| T-mobile USA, INC. | 6 | 12% |
| United States Cellular - Ia | 5 | 10% |
| Cellco Partnership d/b/a Verizon Wireless - Ia | 4 | 8.0% |
| New Cingular Wireless PCS, LLC - Il | 4 | 8.0% |
| MCC Telephony LLC | 3 | 6.0% |
| Paetec Itel, LLC | 2 | 4.0% |
| Onvoy, LLC - Ia | 2 | 4.0% |
| Telnyx LLC | 1 | 2.0% |
| HD Carrier LLC | 1 | 2.0% |
| Stratus Networks | 1 | 2.0% |
| Comcast Ip Phone, LLC | 1 | 2.0% |
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 Iowa City
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Iowa City's rate center (IOWA CITY). The earliest assignment date recorded in the file for these codes is 2001. 6 of the 50 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 319 | 248, 259, 319, 321, 325, 330, 331, 333, 335, 337, 338, 339, 341, 351, 353, 354, 356, 358, 359, 379, 381, 383, 384, 400, 402, 430, 466, 467, 471, 485, 492, 499, 512, 519, 530, 541, 569, 594, 600, 621, 631, 678, 688, 800, 834, 855, 867, 887, 930, 936 |
Source: NANPA utilized central office code file.
When Iowa City's exchanges were assigned
The table groups Iowa City's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 3 | 16% |
| 2010s | 10 | 53% |
| 2020s | 6 | 32% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Iowa City
What a caller sees as "local" is the area code plus prefix. In Iowa City, those come from the IOWA CITY rate center, as recorded by NANPA.
If your business already has a Iowa City number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Iowa City is part of the Iowa City, IA metro area, home to 183,000 people in 2024. County Business Patterns counted 4,177 business establishments in the Iowa City, IA metro area in 2023, employing 75,439 people. The largest sectors by establishment count are retail trade (560), health care and social assistance (560), and construction (513).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 181 | 3,731 | 20.6 |
| Limited-service restaurants | 126 | 2,517 | 20.0 |
| Insurance agencies and brokerages | 75 | 296 | 3.9 |
| Child day care services | 75 | 1,238 | 16.5 |
| Landscaping services | 70 | 420 | 6.0 |
| Dental offices | 60 | 428 | 7.1 |
| Law offices | 59 | 264 | 4.5 |
| Physician practices | 58 | 569 | 9.8 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Iowa City 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.
Porting a number you already use in Iowa City is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
The comparison below uses 18 users, the rounded average establishment size in the Iowa City, IA 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. Callata comes to $359.00 a month for 18 users ($99 a month with 5 users included, then $20 per additional user), below both.
| 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 Iowa City, IA?
319. All exchanges NANPA lists for Iowa City are in 319.
How many phone companies have exchanges in Iowa City?
15, holding 50 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Iowa City 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 Iowa City?
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).