Area Code 918
Oklahoma
Area code 918 serves Oklahoma, primarily Tulsa, in the Central Time (CT) time zone. It has served the region since 01-Jan-1953.
Overlay Area Code
This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.
This area code shares its geographic region with: area code 539 (Tulsa).
In service since: 01-Jan-1953
Demographics & Economics
Demographic Data Unavailable for Area Code 918
County-level demographic data is not available for this area code because NPA boundary polygons are not publicly distributed by NANPA. We use geographic boundary data from the Colorado Open Data Portal to map area codes to counties, which currently covers 194 of 376 geographic area codes.
Demographic statistics (population, income, education, poverty) require county-level aggregations from Census ACS data. Without a county mapping, these aggregations cannot be computed. We are actively seeking additional data sources to improve coverage.
Statistics are population-weighted aggregations from Census ACS 5-year estimates where county boundary data is available.See Sources for details.
Time Zone
- Central Time (CT)
NANPA Relief Status
According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.
Source: NANPA NPA Relief Planning Reports · See all relief planning statuses
Current Time
Prefix Utilization
Geographic Coverage
State
OK
Major Cities
- Tulsa
- Broken Arrow
- Owasso
- Bartlesville
- Muskogee
- Bixby
- Jenks
- Sapulpa
- Sand Springs
- Claremore
- McAlester
- Tahlequah
- Glenpool
- Miami
- Okmulgee
- Coweta
- Pryor Creek
- Poteau
- Sallisaw
- Skiatook
- Collinsville
- Cushing
- Wagoner
- Catoosa
and 354 more cities
Demographics
Detailed demographic and economic data is not yet available for area code 918.
History
Area code 918 was established in 1953 as a geographic area code. It shares its territory with area code area code 539.
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 918).
| County | Population | Share |
|---|---|---|
| Tulsa, OK | 787,053 | 33.2% |
| Wagoner, OK | 187,710 | 7.9% |
| Rogers, OK | 176,073 | 7.4% |
| Osage, OK | 131,387 | 5.5% |
| Creek, OK | 130,555 | 5.5% |
| Washington, OK | 101,165 | 4.3% |
| Muskogee, OK | 84,946 | 3.6% |
| Cherokee, OK | 83,458 | 3.5% |
| Mayes, OK | 69,115 | 2.9% |
| Pittsburg, OK | 61,478 | 2.6% |
| Le Flore, OK | 55,743 | 2.3% |
| Delaware, OK | 53,333 | 2.2% |
| Ottawa, OK | 51,706 | 2.2% |
| Craig, OK | 50,633 | 2.1% |
| Okmulgee, OK | 46,567 | 2.0% |
| Sequoyah, OK | 41,306 | 1.7% |
| Adair, OK | 40,178 | 1.7% |
| McIntosh, OK | 38,449 | 1.6% |
| Okfuskee, OK | 32,668 | 1.4% |
| Pawnee, OK | 28,426 | 1.2% |
| Nowata, OK | 26,159 | 1.1% |
| Lincoln, OK | 21,596 | 0.9% |
| Latimer, OK | 19,948 | 0.8% |
| Payne, OK | 19,187 | 0.8% |
| Haskell, OK | 14,215 | 0.6% |
| Pushmataha, OK | 6,437 | 0.3% |
| Seminole, OK | 5,824 | 0.2% |
| Atoka, OK | 1,965 | 0.1% |
| Hughes, OK | 1,887 | 0.1% |
| Noble, OK | 1,693 | 0.1% |
| McCurtain, OK | 905 | 0.0% |
| Kay, OK | 807 | 0.0% |
| Choctaw, OK | 94 | 0.0% |
Area Code 918 Family Tree
Hover over nodes to see details. Click to navigate to individual area code pages. Use scroll to zoom, drag to pan.
Area code 918 was originally assigned in 01-Jan-1953 to serve OK. Over the years, it has generated 1 descendant area code through a combination of geographic splits and overlays as demand for telephone numbers grew.
Call Context
This area code covers a geographic region across OK, including Tulsa and surrounding communities.
Nearby Area Codes
Area codes geographically closest to 918.
Other Area Codes in Oklahoma
Area codes that also serve Oklahoma, linked for easy comparison.