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.

Outline of Oklahoma

General reference

Names

Common name: Oklahoma

Pronunciation: 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)

Outline of Oklahoma

Geography of Oklahoma

Geography of Oklahoma

Oklahoma is: a U.S. state, a federal state of the United States of America

Location

Northern hemisphere

Western hemisphere

Americas

North America

Anglo America

Northern America

United States of America

Contiguous United States

Western United States

Southwestern United States

Southern United States

South Central United States

Population of Oklahoma: 3,751,351 (2010 U.S. Census) Area of Oklahoma: Atlas of Oklahoma

Outline of Oklahoma

Places in Oklahoma

Historic places in Oklahoma

Abandoned communities in Oklahoma

Ghost towns in Oklahoma

National Historic Landmarks in Oklahoma

National Register of Historic Places listings in Oklahoma

Bridges on the National Register of Historic Places in Oklahoma

National Natural Landmarks in Oklahoma

National parks in Oklahoma

State parks in Oklahoma

Environment of Oklahoma

Climate of Oklahoma

Geology of Oklahoma

Superfund sites in Oklahoma

Wildlife of Oklahoma

Fauna of Oklahoma

Birds of Oklahoma

Reptiles

Snakes of Oklahoma

Natural geographic features of Oklahoma

Lakes of Oklahoma

Rivers of Oklahoma

Regions of Oklahoma

Central Oklahoma

Eastern Oklahoma

Northern Oklahoma

Northeastern Oklahoma

Northwestern Oklahoma

Southern Oklahoma

Southeastern Oklahoma

Southwestern Oklahoma

Western Oklahoma

Administrative divisions of Oklahoma

The 77 counties of the state of Oklahoma

Municipalities in Oklahoma

Cities in Oklahoma

State capital of Oklahoma: Oklahoma City

City nicknames in Oklahoma

Towns in Oklahoma

Unincorporated communities in Oklahoma

Census-designated places in Oklahoma

Demography of Oklahoma

Demographics of Oklahoma

Government and politics of Oklahoma

Politics of Oklahoma

Form of government: U.S. state government

United States congressional delegations from Oklahoma

Oklahoma State Capitol

Elections in Oklahoma

Political party strength in Oklahoma

Branches of the government of Oklahoma

Government of Oklahoma

Executive branch of the government of Oklahoma

Governor of Oklahoma

Lieutenant Governor of Oklahoma

Secretary of State of Oklahoma

State Treasurer of Oklahoma

State departments

Oklahoma Department of Transportation

Legislative branch of the government of Oklahoma

Oklahoma Legislature (bicameral) Upper house: Oklahoma Senate Lower house: Oklahoma House of Representatives