Our Companies

Oklahoma Natural Gas Company
Oklahoma Natural Gas Company, founded in 1906, is the cornerstone of one of the oldest corporations in Oklahoma. The history of Oklahoma Natural Gas is closely aligned with the history of the state.

Facts At A Glance

  • Miles of Service Lines, Pipelines and Other Natural Gas Distribution Properties - 19,000
  • Average Number of Customers - 860,551
  • Number of Employees - 1,200
  • Oklahoma's Rank as a Gas Producing State: 3rd nationally

Oklahoma Natural Gas Map

Kansas Gas Service
Kansas Gas Service was established in 1997. It has been known under a variety of names – Gas Service Company, Kansas Gas and Electric Company, KPL and KPL Gas Service - with a 100-year tradition of utility service to customers in Kansas, western Missouri and northeastern Oklahoma. In 1997 ONEOK purchased natural gas assets from Western Resources, forming the new company named Kansas Gas Service.

Facts At A Glance    

  • Miles of Service Lines, Pipelines and Other Natural Gas Distribution Properties - 13,500
  • Average Number of Customers - 634,977
  • Number of Employees - 1,000

Kansas Gas Service map 

Texas Gas Service
Texas Gas Service was formed in 2003 when ONEOK purchased the Texas assets of Southern Union Gas. Southern Union Gas was created in far-west Texas in the 1920s and had since acquired properties in El Paso, Austin, the Rio Grande Valley and other regions of Texas now part of today’s Texas Gas Service territory. Texas Gas Service has a 90 plus year tradition of utility service to customers throughout Texas.

Facts At A Glance

  • Miles of Service Lines, Pipelines and Other Natural Gas Distribution Properties  - 10,900
  • Average Number of Customers - 644,408
  • Number of Employees - 800
  • Texas' Rank as a Gas Producing State: 1st nationally

Texas Gas Service Map

Statistics as of Dec. 31, 2015