CallataGuidesGet a local business phone number in Colfax, CA
Colfax's area code, prefixes and carriers from NANPA records, and how to put a Colfax number in front of your customers.
- Area code
- 530
- Exchanges
- 6NANPA-assigned
- Carriers
- 5
- Population
- 2,058Census 2024 est.
Area codes in Colfax
With 2,058 residents in the Census 2024 estimate, Colfax sits in Placer County, California. All 6 exchanges NANPA lists for its rate center are in area code 530. 530 is part of an overlay with 837, so a new local number in Colfax may carry any of those codes depending on which have numbers available. Colfax is in the Pacific time zone.
According to NANPA's dialing-plan data, local calls within 530 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 |
|---|---|---|---|---|---|
| 530 | 6 | 100% | 1997 | 837 | Pacific |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Colfax
5 carriers hold the 6 exchanges assigned to Colfax's rate center. Onvoy, LLC - CA has the most, with 2. 5 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Onvoy, LLC - CA | 2 | 33% |
| Frontier California INC. | 1 | 17% |
| Teleport Communications America, LLC - CA | 1 | 17% |
| Bandwidth.com CLEC, LLC - CA | 1 | 17% |
| Fractel, LLC | 1 | 17% |
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 Colfax
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Colfax's rate center (COLFAX). The earliest assignment date recorded in the file for these codes is 2020. 2 of the 6 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 530 | 323, 346, 349, 512, 819, 866 |
Source: NANPA utilized central office code file.
Rate centers and local calling in Colfax
What a caller sees as "local" is the area code plus prefix. In Colfax, those come from the COLFAX rate center, as recorded by NANPA.
Keeping an existing Colfax number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 530 when you pick it.
Who does business near Colfax
Colfax is part of the Sacramento-Roseville-Folsom, CA metro area, home to 2.5 million people in 2024. County Business Patterns counted 55,974 business establishments in the Sacramento, CA metro area in 2023, employing 825,511 people. The largest sectors by establishment count are professional, scientific, and technical services (7,449), health care and social assistance (6,924), and construction (6,208).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 2,027 | 36,692 | 18.1 |
| Full-service restaurants | 1,815 | 35,856 | 19.8 |
| Offices of real estate agents and brokers | 1,368 | 3,110 | 2.3 |
| Dental offices | 1,238 | 9,162 | 7.4 |
| Law offices | 1,194 | 7,580 | 6.3 |
| Physician practices | 1,108 | 16,439 | 14.8 |
| Residential remodelers | 1,094 | 4,683 | 4.3 |
| Management consulting firms | 904 | 5,308 | 5.9 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Colfax 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 Colfax, 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.
A 15-person team is the benchmark here, the rounded average establishment size in the Sacramento, CA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $450.00 a month and Ooma Office Pro $374.25. On Callata the same 15 people cost $299.00 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 | $299.00 | $3,588.00 |
| Quo (Starter) | $19.00 per user | $285.00 | $3,420.00 |
| Nextiva (Core) | $23.00 per user | $345.00 | $4,140.00 |
| Ooma (Office Pro) | $24.95 per user | $374.25 | $4,491.00 |
| Dialpad (Standard) | $27.00 per user | $405.00 | $4,860.00 |
| RingCentral (RingEX Core) | $30.00 per user | $450.00 | $5,400.00 |
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 Colfax, CA?
530. All exchanges NANPA lists for Colfax are in 530.
How many phone companies have exchanges in Colfax?
5, holding 6 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Colfax 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 Colfax?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 15 users come to $299.00 a month. For comparison, 15 users on RingCentral RingEX Core list at $450.00 a month (checked September 28, 2026).