CallataGuidesGet a local business phone number in Castle Rock, WA
Castle Rock's area codes, prefixes and carriers from NANPA records, and how to put a Castle Rock number in front of your customers.
- Area code
- 360 / 564
- Exchanges
- 3NANPA-assigned
- Carriers
- 3
- Population
- 2,445Census 2024 est.
Area codes in Castle Rock
Castle Rock city is a Census place in Cowlitz County, Washington, with an estimated 2,445 residents in 2024. NANPA lists 3 exchanges for its rate center across 2 area codes; 360 has the most (2, 67%). 360 is part of an overlay with 564, so a new local number in Castle Rock may carry any of those codes depending on which have numbers available. Castle Rock is in the Pacific time zone.
According to NANPA's dialing-plan data, local calls within 360 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Castle Rock exchanges by carrier
3 carriers hold the 3 exchanges assigned to Castle Rock's rate center. Qwest Corporation has the most, with 1. 2 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Castle Rock 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 | 1 | 33% |
| Level 3 Communications, LLC - Wa | 1 | 33% |
| Terra Nova Telecom INC. | 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.
Exchanges (NPA-NXX) assigned in Castle Rock
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Castle Rock's rate center (CASTLEROCK). The earliest assignment date recorded in the file for these codes is 2005. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 360 | 274, 967 |
| 564 | 777 |
Source: NANPA utilized central office code file.
When Castle Rock's exchanges were assigned
The table groups Castle Rock's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 50% |
| 2010s | 1 | 50% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Castle Rock
NANPA ties every exchange to a rate center. For Castle Rock that is CASTLEROCK, so a number from one of these exchanges reads as local to people in and around Castle Rock.
New local numbers are drawn from carrier inventory, so the exact 360 numbers available change over time; porting an existing number is free.
The local business market
Castle Rock is part of the Longview-Kelso, WA metro area, home to 114,000 people in 2024. County Business Patterns counted 2,309 business establishments in the Longview, WA metro area in 2023, employing 33,796 people. The largest sectors by establishment count are retail trade (319), construction (315), and health care and social assistance (240).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 73 | 926 | 12.7 |
| Limited-service restaurants | 68 | 1,576 | 23.2 |
| Offices of real estate agents and brokers | 54 | 93 | 1.7 |
| Residential remodelers | 45 | 134 | 3.0 |
| Janitorial services | 39 | 242 | 6.2 |
| Dental offices | 38 | 417 | 11.0 |
| Landscaping services | 38 | 215 | 5.7 |
| Plumbing, heating and air-conditioning contractors | 37 | 645 | 17.4 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Castle Rock 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 Castle Rock 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.
A 15-person team is the benchmark here, the rounded average establishment size in the Longview, WA 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. Callata comes to $299.00 a month for 15 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 | $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 Castle Rock, WA?
Castle Rock has exchanges in 360 and 564; 360 has the most.
How many phone companies have exchanges in Castle Rock?
3, holding 3 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Castle Rock 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 Castle Rock?
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).