CallataGuidesGet a local business phone number in Fairfax, IA
Fairfax's area code, prefixes and carriers from NANPA records, and how to put a Fairfax number in front of your customers.
- Area code
- 319
- Exchanges
- 3NANPA-assigned
- Carriers
- 2
- Population
- 2,937Census 2024 est.
What area code is Fairfax, IA?
Fairfax city is a Census place in Linn County, Iowa, with an estimated 2,937 residents in 2024. All 3 exchanges NANPA lists for its rate center are in area code 319. Fairfax 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 | 3 | 100% | 1947 | none | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Fairfax exchanges by carrier
2 carriers hold the 3 exchanges assigned to Fairfax's rate center. South Slope Coop. Tel. CO., INC. has the most, with 2. 1 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Fairfax can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| South Slope Coop. Tel. CO., INC. | 2 | 67% |
| MCC Telephony LLC | 1 | 33% |
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.
Fairfax phone prefixes
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Fairfax's rate center (FAIRFAX). The earliest assignment date recorded in the file for these codes is 2006. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 319 | 357, 845, 846 |
Source: NANPA utilized central office code file.
What makes a number local to Fairfax
What a caller sees as "local" is the area code plus prefix. In Fairfax, those come from the FAIRFAX rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 319 numbers available change over time; porting an existing number is free.
Businesses around Fairfax
Fairfax is part of the Cedar Rapids, IA metro area, home to 279,000 people in 2024. County Business Patterns counted 6,793 business establishments in the Cedar Rapids, IA metro area in 2023, employing 128,088 people. The largest sectors by establishment count are health care and social assistance (848), retail trade (830), and construction (738).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 236 | 4,390 | 18.6 |
| Limited-service restaurants | 169 | 3,461 | 20.5 |
| Insurance agencies and brokerages | 157 | 833 | 5.3 |
| Offices of real estate agents and brokers | 104 | — | — |
| Child day care services | 98 | 1,221 | 12.5 |
| Dental offices | 97 | 864 | 8.9 |
| General automotive repair shops | 95 | 526 | 5.5 |
| Physician practices | 94 | 2,160 | 23.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Fairfax
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 Fairfax, 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 19 users, the rounded average establishment size in the Cedar Rapids, IA metro area. At list prices checked September 28, 2026, that is $474.05 a month on Ooma Office Pro and $570.00 on RingCentral RingEX Core. On Callata the same 19 people cost $379.00 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 | $379.00 | $4,548.00 |
| Quo (Starter) | $19.00 per user | $361.00 | $4,332.00 |
| Nextiva (Core) | $23.00 per user | $437.00 | $5,244.00 |
| Ooma (Office Pro) | $24.95 per user | $474.05 | $5,688.60 |
| Dialpad (Standard) | $27.00 per user | $513.00 | $6,156.00 |
| RingCentral (RingEX Core) | $30.00 per user | $570.00 | $6,840.00 |
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 Fairfax, IA?
319. All exchanges NANPA lists for Fairfax are in 319.
How many phone companies have exchanges in Fairfax?
2, holding 3 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Fairfax 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 Fairfax?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 19 users come to $379.00 a month. For comparison, 19 users on RingCentral RingEX Core list at $570.00 a month (checked September 28, 2026).