Area Code 307 – Wyoming Location, Map & Cities

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📞 307 Area Code — Quick Reference
📍 LocationCheyenne, Wyoming
🕐 Time ZoneMountain (UTC-7/UTC-6)
🗓️ StatusActive — Geographic

Numbers starting with 307 connect to Cheyenne and nearby areas in Wyoming. Whether you received an unexpected call from this number or you’re trying to figure out where a 307 number is based, this guide covers the exact location, time zone, spam reputation, blocking instructions, and which cities fall under this code.

📍 Where Is the 307 Area Code Located?

The 307 area code is located in Wyoming, primarily serving Cheyenne and the surrounding region. It’s a standard geographic area code under the North American Numbering Plan (NANP). Keep in mind that mobile number portability means someone could carry a 307 number with them after moving — so the code tells you where the number was issued, not necessarily where the person is right now.

307 Area Code — Location Details
State/ProvinceWyoming (WY)
Major CityCheyenne
CountryUnited States (+1)
Time ZoneMountain (UTC-7/UTC-6)
TypeGeographic — Standard
NANPA StatusActive

🕐 307 Area Code Time Zone

The 307 area code operates in the Mountain Time Zone (UTC-7/UTC-6). Here’s how it compares to other US time zones:

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 Business hours (good to call)     Early / late hours     Night — do not call
Official Resources: Report Fraud — FTC Do Not Call Registry NANPA Directory
Time ZoneDifference from 307
Eastern Time+2 hours
Central Time+1 hour
Mountain TimeSame time
Pacific Time-1 hour
💡 Calling Tip: Reach someone in the 307 area between 10 AM – 4 PM their local time for the best chance of an answer. Calls outside those hours are more likely to be screened or ignored.

🛡️ Is 307 Area Code Spam or Scam?

The 307 area code is completely legitimate, covering real residents and businesses in Cheyenne. However, spam callers love spoofing well-known area codes like 307 because you’re more likely to pick up a local-looking number. If an unexpected 307 caller asks for personal info or payment, that’s your red flag.

⚠️ Red Flag: If a 307 caller demands immediate payment via gift cards, wire transfer, or crypto — hang up. No legitimate organization uses these methods. Verify by calling the company’s official number directly.

How to verify: Don’t call back the number — look up the official number for whatever organization the caller claimed to represent and call that instead. Google the full 10-digit number in quotes to check if others have reported it as spam.

📵 How to Block 307 Spam Calls & Texts

Block on iPhone

  1. Open Phone → tap Recents
  2. Tap ⓘ next to the 307 spam number
  3. Scroll down → “Block this Caller”
  4. Silence all unknowns: Settings → Phone → Silence Unknown Callers → ON

Block on Android

  1. Open Phone → find the 307 number
  2. Tap ⋮ menu → “Block number”
  3. For broader blocking: Settings → Blocked numbers → Unknown toggle ON

Report Spam

  1. Forward spam texts to 7726 (SPAM)
  2. Report at reportfraud.ftc.gov
  3. Register at donotcall.gov or call 1-888-382-1222

🔍 Who Called from 307? Reverse Lookup

  1. Google the full 10-digit number in quotes — catches ~70% of unknown callers
  2. Check Whitepages.com or Truecaller.com
  3. Search 800notes.com for community reports
  4. No voicemail left? Almost certainly spam — legitimate callers leave messages
⚠️ One-Ring Scam: If a 307 number rings once and hangs up, do NOT call back. This scam connects you to a premium-rate line that charges your bill.

🔗 Nearby Area Codes

CodeLocationTime Zone

❓ 307 Area Code — FAQ

What state is 307 area code in?
The 307 area code is in Wyoming, serving Cheyenne and surrounding areas.
What city does 307 cover?
307 primarily covers Cheyenne and nearby communities in Wyoming.
Is 307 toll-free?
No. 307 is a geographic area code. Toll-free codes are 800, 833, 844, 855, 866, 877, 888.
What time zone is 307?
Mountain (UTC-7/UTC-6).
Is 307 a scam?
307 is legitimate — it serves real people in Cheyenne. But scammers may spoof 307 numbers. Verify suspicious callers independently.
Why do I keep getting 307 calls?
Repeated 307 calls without a known contact are likely robocalls. Use your phone’s Silence Unknown Callers feature.
Can I get a 307 number remotely?
Yes — VoIP services like Google Voice offer 307 numbers regardless of where you live.
Is 307 cell or landline?
307 covers both. US area codes don’t distinguish between mobile and landline.
How do I block 307 calls?
iPhone: Settings → Phone → Silence Unknown Callers. Android: Phone → Settings → Blocked numbers. For area-code blocking, use Truecaller or RoboKiller.

🔗 Related Area Code Guides

    Updated April 2026 · Data from NANPA & FCC · areacodess.org/