Tulsa, Oklahoma, is served by primary area code 918 with the 539 overlay. Whether you are calling a Tulsa number, verifying an unknown caller, or setting up a new local line, this guide covers every area code that serves the city, how local dialing works, the ZIP codes involved, and the scam-call patterns residents report most often.
Tulsa Area Codes at a Glance
| Detail | Information |
|---|---|
| Primary Area Code | 918 |
| Overlay Code | 539 |
| Time Zone | Central Time (CT, UTC-6 / UTC-5) |
| Major Counties | Tulsa County |
| State | Oklahoma |
Area Code Breakdown & Neighborhood Mapping
Tulsa sits in northeastern Oklahoma along the Arkansas River, where 918 is the original area code and 539 was later added as an overlay serving the same geographic area. Because the two codes overlap, every local number keeps its own ten-digit identity and newly issued lines may receive either code.
Within the city, 918 covers downtown and the Blue Dome and Brady arts districts, Midtown, Cherry Street, Brookside, and south Tulsa. Nearby communities in the same region include Broken Arrow.
Across Oklahoma, 918 connects to the rest of the state through standard long-distance dialing, and every call to or from Tulsa follows the same North American Numbering Plan rules used nationwide. Knowing which code covers the city helps you spot out-of-area numbers at a glance and recognize when an incoming call may not be as local as it appears.
Local Dialing Rules & International Calling
Like the rest of the United States, Tulsa uses 10-digit dialing, which is mandatory throughout any area served by an overlay. Dial the area code plus the seven-digit number for local calls. For domestic long distance, add a leading 1 (1 + 918 + number). To call Tulsa from another country, dial your country’s exit code, then the U.S. country code +1, then the area code and the local number. Mobile users can enter +1 918 directly. Three-digit services such as 911 for emergencies and 988 for the Suicide and Crisis Lifeline are always dialed directly, with no area code required.
Major ZIP Codes in Tulsa
Tulsa ZIP codes run from 74103 through the 74146 range, including 74103 (downtown), 74104 and 74105 (Midtown and Brookside), 74114 (Cherry Street), and 74136 (south Tulsa).
Cell Phones & Number Portability
Thanks to federal number portability, a 918 number no longer proves the caller is currently in Tulsa. Residents who move away often keep their mobile numbers, and newcomers frequently arrive with codes from other states. New local service is typically assigned a 918 or 539 number, but the reliable habit is to dial all ten digits every time and to judge callers by who they are rather than by the area code they display.
Spam & Scam Call Warnings in Tulsa
Tulsa residents report the same robocall trends seen across Oklahoma. Watch for these patterns:
- Neighbor spoofing: Scam calls that fake a 918 prefix so the number looks local. Screen unfamiliar callers even when the area code matches.
- Utility shutoff threats: Callers posing as the power or water company demanding immediate payment by gift card or wire. Real utilities never work this way.
- Government impersonation: Fake IRS, Social Security, or county “warrant” calls pressuring you to pay to avoid arrest.
- Local angle: In this energy-industry hub, watch for fake job-offer and oilfield-recruitment scams, along with spoofed calls posing as a local bank or utility company.
- Auto-warranty and Medicare pitches: High-volume robocalls seeking personal, financial, or insurance details, often using a recorded voice and a callback number.
Let unknown calls go to voicemail, never share financial information with an inbound caller, and report unwanted calls to the FTC at reportfraud.ftc.gov.
Frequently Asked Questions
What area code does Tulsa use?
Tulsa uses area code 918, with 539 serving as an overlay across the same area.
Do I have to dial the area code for local calls?
Yes. Tulsa uses 10-digit dialing, so include the area code even for calls within the city.
What county is Tulsa in?
Tulsa is located in Tulsa County.
What time zone is Tulsa in?
Tulsa observes Central Time (CT, UTC-6 / UTC-5).
How do I call Tulsa from another country?
Dial your exit code, then +1, then 918 and the seven-digit local number.
Does the area code affect the cost of a call?
No. Call costs depend on your calling plan, not on the 918 area code. Most U.S. mobile and landline plans include nationwide calling, so reaching a Tulsa number is treated the same as any other domestic call.
Can I keep my phone number if I move to Tulsa?
Usually yes. Federal number portability lets you keep an existing mobile number when you relocate, which is why many Tulsa residents carry numbers with area codes from other cities or states.
Stay Safe & Explore More
- Verify an unknown caller in our Scam Alerts directory.
- Comparing nationwide numbers? See our Toll-Free Numbers guides.