How many area codes does Oklahoma have?

Oklahoma has 4 active geographic area codes in the North American Numbering Plan: 405, 539, 580, 918. Each code serves a distinct region or acts as an overlay for a high-demand metro area.

What is the oldest area code in Oklahoma?

The oldest area code in Oklahoma is 405, assigned in 1947. It serves Oklahoma City and the Central Oklahoma region. 405 is one of the original 86 area codes created when the North American Numbering Plan was first established.

Can I get a Oklahoma phone number from anywhere?

Yes. DialPhone virtual phone numbers are not tied to a physical location. You can get a Oklahoma area code number and use it from any device — desktop, mobile, or browser — anywhere with an internet connection. This makes Oklahoma numbers ideal for remote teams, distributed businesses, and sales teams targeting Oklahoma customers.

How much does a Oklahoma area code number cost?

DialPhone plans start at $24 per user per month on the Core plan. Every plan includes your choice of Oklahoma area code number, unlimited US and Canada calling, business SMS, AI call captions, and a free 14-day trial — no credit card required. See the DialPhone pricing page for current tier details.

Can I port my existing Oklahoma number to DialPhone?

Yes. DialPhone supports free number porting from any major US or Canadian carrier, including existing Oklahoma area code numbers. Porting typically completes in 2 to 5 business days with zero service interruption. See the complete number porting guide for step-by-step instructions.

What time zones are used in Oklahoma?

Oklahoma area codes span the CT time zone. When scheduling calls with Oklahoma customers, verify the specific area code's time zone to avoid calling outside business hours.

Area Codes in Oklahoma — Local Business Phone Numbers

Quick answer

Oklahoma has 4 active geographic area codes covering Oklahoma City, Tulsa, Lawton. The most-recognized codes are 405, 918, 580, serving Oklahoma City and the Central Oklahoma region.

Total codes: 4
Top metro: Oklahoma City
Time zone: CT
Largest code: 405 (Oklahoma City)

By Darshan M

Growth Operations Lead at DialPhone · Verified against NANPA data

Area codes in Oklahoma

Oklahoma is served by 4 active geographic area codes in the North American Numbering Plan. These codes were assigned between 1947 and 2011 as population and call demand grew across the state.

Code	Primary City	Region	Established	Overlay Codes	Population
405	Oklahoma City	Central Oklahoma	1947	572	1,500,000
539	Tulsa	Northeastern Oklahoma	2011	918	1,000,000
580	Lawton	Western Oklahoma	1998	—	500,000
918	Tulsa	Northeastern Oklahoma	1947	539	1,000,000

Time zones in Oklahoma

All area codes in Oklahoma fall in the CT time zone.

CT — area codes: 405, 539, 580, 918

Top metros and their area codes

Below are the primary cities in Oklahoma and the area codes that serve each metro. Cities with multiple codes share geography due to overlay assignments added as demand grew.

Lawton — 580
Oklahoma City — 405
Tulsa — 539 , 918

Why get a local Oklahoma number?

A Oklahoma area code number gives your business three core advantages:

Local trust signal. Customers in Oklahoma recognize local area codes as their own. A familiar caller ID builds immediate credibility for service businesses, sales teams, and patient communication.
Higher answer rate. Calls from a local area code are answered far more often than toll-free or out-of-area numbers — industry data puts the lift at 20–40%. That difference matters most for outbound sales, appointment confirmations, and service callbacks.
Targeted marketing. Advertising a local Oklahoma number on print, radio, digital, and outdoor channels converts better than a national 800 number for audiences who prefer doing business locally.

How to get a Oklahoma area code number with DialPhone

Setting up a Oklahoma business number takes under 10 minutes:

Sign up for a DialPhone plan. Choose any plan starting at $24/user/month. Free 14-day trial, no credit card required.
Search available Oklahoma numbers. Filter the DialPhone number inventory by state, area code, city, or number pattern.
Choose your number and configure. Assign your new Oklahoma number to a user or team, configure call routing, voicemail, AI receptionist, and business SMS.
Port your existing number (optional). Already have a Oklahoma number? Free number porting completes in 2 to 5 business days with zero service interruption.