Get a local business phone number in Rock Springs, WY

What area code is Rock Springs, WY?

With 22,967 residents in the Census 2024 estimate, Rock Springs sits in Sweetwater County, Wyoming. All 17 exchanges NANPA lists for its rate center are in area code 307. Rock Springs is in the Mountain time zone.

According to NANPA's dialing-plan data, local calls within 307 are dialed as seven digits and toll calls as 1 plus ten digits.

Phone carriers in Rock Springs

8 carriers hold the 17 exchanges assigned to Rock Springs's rate center. Cellco Partnership d/b/a Verizon Wireless - WY has the most, with 5. 9 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Rock Springs can come from any of these blocks; once it is yours, porting lets it move between providers.

Local prefixes for Rock Springs

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Rock Springs's rate center (ROCK SPG). The earliest assignment date recorded in the file for these codes is 2001. 1 of the 17 were assigned in 2020 or later.

When Rock Springs's exchanges were assigned

The table groups Rock Springs's exchanges by the decade NANPA recorded them as assigned.

Rate centers and local calling in Rock Springs

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Rock Springs's numbers are rated to the ROCK SPG rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Rock Springs number.

Keeping an existing Rock Springs number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 307 when you pick it.

Businesses around Rock Springs

Rock Springs is part of the Rock Springs, WY micropolitan area, home to 41,273 people in 2024. County Business Patterns counted 1,219 business establishments in the Rock Springs, WY micropolitan area in 2023, employing 15,361 people. The largest sectors by establishment count are retail trade (153), construction (126), and accommodation and food services (119).

Setting up a Rock Springs business line

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 Rock Springs 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 13-person team is the benchmark here, the rounded average establishment size in the Rock Springs, WY micropolitan area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $390.00 a month and Ooma Office Pro $324.35. Callata comes to $259.00 a month for 13 users ($99 a month with 5 users included, then $20 per additional user), below both.