Proper noun

Singular Oklahoma

Plural -

Oklahoma

1. A state of the United States of America. Capital and largest city: Oklahoma City.
2. A county in the State of Oklahoma.

Derived terms

• OK
• Oklahoman

Oklahoma ( /ˌoʊkləˈhoʊmə/ (help·info)) is a state located in the South Central region of the United States of America. With an estimated 3,617,316 residents in 2007 and a land area of 68,667 square miles (177,847 km²), Oklahoma is the 28th most populous and 20th-largest state. The state's name is derived from the Choctaw words okla and humma, meaning "red people", and is known informally by its nickname, The Sooner State. Formed by the combination of Oklahoma Territory and Indian Territory on November 16, 1907, Oklahoma was the 46th state to enter the union. Its residents are known as Oklahomans, and its capital and largest city is Oklahoma City. It is the only state that shares its name with its capital city.

A major producer of natural gas, oil and agriculture, Oklahoma relies on an economic base of aviation, energy, telecommunications, and biotechnology. It has one of the fastest growing economies in the nation, ranking among the top states in per capita income growth and gross domestic product growth. Oklahoma City and Tulsa serve as Oklahoma's primary economic anchors, with nearly 60 percent of Oklahomans living in their metropolitan statistical areas. The state holds a mixed record in education and healthcare, and its largest universities participate in the NCAA and NAIA athletic associations, with two collegiate athletic departments rated among the most successful in American history.

With small mountain ranges, prairie, and eastern forests, most of Oklahoma lies in the Great Plains and the U.S. Interior Highlands—a region especially prone to severe weather. In addition to having a prevalence of German, Irish, British and Native American ancestry, more than 25 Native American languages are spoken in Oklahoma, the most of any state. It is located on a confluence of three major American cultural regions and historically served as a route for cattle drives, a destination for southern settlers, and a government-sanctioned territory for Native Americans. Part of the Bible Belt, widespread belief in evangelical Christianity makes it one of the most politically conservative states, though Oklahoma has more voters registered in the Democratic Party than in any other party.

Oklahoma is a state located in the south-central region of the United States. Its nickname is the "Sooner State", and is part of a region commonly known as the American "Heartland." Oklahoma City is the state's capital and largest city. The Congressional Quarterly and Census report places Oklahoma in the Southern United States.

Oklahoma became the 46th state in the Union on November 16th, 1907.

Its residents are often called Okies.

Many displaced Oklahomans have expressed their desire to return to Oklahoma in song:

For the musical, see Oklahoma!

For the musical 1955 film, see Oklahoma (1955 film)