page_title: Outline of Oklahoma
section_title: General reference
hierarchical_section_title: Outline of Oklahoma / General reference
caption_attribution_description: English: Map of Oklahoma.
context_page_description: The following outline is provided as an overview of and topical guide to the U.S. state of Oklahoma:
  Oklahoma – state located in the South Central United States. Oklahoma is the 20th most extensive and the 28th most populous of the 50 United States. The state's name is derived from the Choctaw words okla and humma, meaning "red people". On November 16, 1907, Oklahoma became the 46th state to enter the union. Its residents are known as Oklahomans or, informally "Okies", and its capital and largest city is Oklahoma City. A major producer of natural gas, oil, and agricultural products, Oklahoma relies on an economic base of aviation, energy, telecommunications, and biotechnology.
context_section_description: Names
  Common name: Oklahoma
  Pronunciation: /ˌoʊkləˈhoʊmə/ (listen)
  Official name: State of Oklahoma
  Abbreviations and name codes
  Postal symbol:  OK
  ISO 3166-2 code:  US-OK
  Internet second-level domain:  .ok.us
  Nicknames
  Native America (currently used on license plates)
  Land of the Red Man
  Sooner State
  Adjectival: Oklahoma
  Demonyms:
  Oklahoman
  Sooner (historic)
  Boomer (historic)
  Okie (archaic)
caption: An enlargeable map of the state of Oklahoma
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