Introduction
The 307 area code is Wyoming's one and only area code, and this guide breaks down everything you need to know about it. Whether you live in the Cowboy State or run a business that serves it, understanding the 307 area code helps you reach the right people with confidence. You will learn where it covers, what time zone it follows, why scammers target it, and how to claim your own local line. Stick around, because by the end you will know exactly how to get a Wyoming number that earns instant trust.
Key Takeaways:
- The 307 area code covers the entire state of Wyoming and is the state's only area code.
- It has been in service since January 1, 1947, making it one of North America's original codes.
- Phones in this region follow Mountain Time (UTC-7, or UTC-6 during daylight saving).
- Major cities include Cheyenne, Casper, Gillette, Laramie, and Jackson.
- You can set up a virtual 307 phone number online in minutes through CallMama.
Where Is the 307 Area Code Located?
It serves every part of Wyoming, from the high plains in the east to the Teton mountains in the west. This code is the only one in the entire state, covering all 23 counties and more than 85 cities and towns. Wyoming is the only U.S. state served by a single area code, mostly because it has the smallest population in the country. With fewer than 600,000 residents, the state has never come close to running out of phone numbers. That means any Wyoming landline or local mobile line you dial will begin with these three digits, no matter which town you are calling.
Major Cities Covered
Cheyenne, the state capital, is the largest city with about 79,000 residents. Casper follows with roughly 67,000 people, then Gillette, Laramie, and Rock Springs round out the top five. Tourist hubs like Jackson and Sheridan also fall under this code, drawing visitors from around the world. Smaller towns such as Evanston, Cody, and Powell share the same three digits, which keeps the whole state feeling close-knit. So whether you are calling a ranch near Riverton or an office in Green River, the 307 area code connects you.
For a look at another statewide prefix, see the 501 area code guide.
What Time Zone Does the 307 Area Code Use?

The 307 area code sits in the Mountain Time Zone, which runs seven hours behind UTC (UTC-7). During daylight saving time, from the second Sunday in March to the first Sunday in November, the clock shifts to Mountain Daylight Time (UTC-6). Wyoming observes daylight saving along with most of the country, so the offset changes twice a year. If you call from the East Coast, remember the state is two hours behind you. Aim for late morning or early afternoon to catch someone during normal business hours, and avoid early calls that might wake a Wyoming contact. The whole state keeps the same clock, so you never have to juggle two zones within its borders. That single, steady time setting makes scheduling calls and meetings refreshingly simple.
A Brief History of the 307 Area Code
The 307 area code is one of the original 86 codes assigned when the North American Numbering Plan launched in 1947. Wyoming received a single code on January 1 of that year, and it has never needed another one. Most states have split their regions or added overlay codes as their populations grew, but Wyoming's steady, modest population kept demand low. Back then, rotary phones made shorter, simpler codes easier to dial, and the pattern has held for nearly 80 years. That long run gives the 307 area code a rare, authentic local identity that residents wear with pride.
For a look at another music-city market, see the 615 area code guide.
Now that you see how trusted a Wyoming line can be, why not own one yourself?
A local Wyoming number helps your calls get answered instead of ignored, whether you are reaching neighbors or new customers.
Why Scammers Target 307 Phone Numbers

Scammers often spoof 307 phone numbers because a local code feels familiar and safe to answer. Recent campaigns include fake "Wyoming Department of Vehicles" texts claiming you owe a traffic ticket, plus calls pretending to be the Social Security Administration. Reports show that about three out of four 307 scam calls actually reach people who live outside Wyoming. The goal is always the same: scare you into sending money or sharing private details fast. Knowing this pattern makes it much easier to stay calm and avoid the trap.
How to Spot a 307 Scam Call
Real agencies never demand payment by gift card, wire transfer, or cryptocurrency. Be cautious if a caller pressures you, threatens arrest, or asks for your Social Security number out of the blue. Hang up, then call the agency back using a number listed on its official website. You can also report the call to the FTC fraud report service so others stay protected too. Adding the number to your phone's block list stops repeat attempts from the same source. When in doubt, trust your instincts and let the call go to voicemail. A short pause protects you far better than any rushed reply.
How to Get a Virtual Phone Number from CallMama

CallMama makes it simple to set up a real, working local line without a Wyoming address or extra hardware. The app gives you a true local presence, crystal-clear call quality, and affordable rates that beat most traditional carriers. Follow these steps to claim your line today.
- Visit callmama.com or download the free app from the App Store or Google Play.
- Create your free account using an email address or phone number.
- Browse the available calling plans and pick the one that fits your budget.
- Choose your country, then select the 307 area code for a Wyoming number.
- Complete a quick, secure checkout to confirm your new line.
- Activate the number inside the app and start making calls right away.
- Add the number to your business cards, website, or social profiles to look local.
Who Benefits From a 307 Phone Number?

A virtual local line is not just for Wyoming residents. Remote workers who moved away can keep a familiar line for friends and family back home. Small businesses use a local 307 number to look established and win trust from nearby customers. Real estate agents, contractors, and service providers all gain an edge when their caller ID shows a hometown code. A recognizable code can be the difference between a missed call and a closed deal.
Even larger companies set up a Wyoming line to test a new market without opening a physical office. A local presence signals that you are part of the community, not a faceless out-of-state outfit. People answer calls they recognize, and that simple advantage can lift your response rates noticeably. With a virtual line, you get all of that flexibility for a fraction of the usual cost.
Owning a local Wyoming line also keeps your personal cell private. You can route business calls to a separate line, set a custom voicemail greeting, and switch the line off after hours. That balance of presence and privacy is hard to match with a standard mobile plan.
The 307 area code carries real meaning, so a line that uses it carries weight too. From first impressions to repeat business, a local identity pays off again and again. The best part is that you no longer need to live in Wyoming to enjoy it. Setup is fast, the monthly cost stays low, and you can manage everything from a single app on your phone. For freelancers, startups, and family callers alike, a hometown line removes the guesswork and helps every conversation start on the right foot.
Conclusion
A trusted local line is now just a few taps away, and the steps above show how quick the process really is. You have learned where the 307 area code reaches, the Mountain Time hours it follows, and the history that makes it unique. You also know how to spot scams and how a genuine 307 area code line builds confidence with everyone you call. With that knowledge, you can pick a number that fits your goals and start dialing today.
Looking ahead, a virtual line keeps you flexible as your needs change and your contacts grow. Setting up a 307 phone number takes only minutes, yet the trust it builds can last for years. Your next call could be the one that lands a client, reconnects an old friend, or grows your reach across the Cowboy State. Take the simple step now, and let your new local number do the heavy lifting for you.
Your perfect Wyoming line is ready whenever you are.
Skip the long contracts and pricey hardware, and unlock a local number that travels with you anywhere.
