Oklahoma (state)

Oklahoma (state)
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Name	Oklahoma
Capital	Oklahoma City
Largest city	Oklahoma City
Admission order	46th
Admission date	November 16, 1907
Area total sq mi	69898
Population estimate	4,000,000
Population estimate year	2020
Timezone	Central Time Zone

Oklahoma (state) is a state located in the south-central region of the United States. It borders Texas, Kansas, Missouri, Arkansas, New Mexico, and Colorado, and features a mix of Great Plains, forested hills, and prairie. The state has a complex heritage rooted in Native American nations, frontier settlement, and energy development, and its capital and largest city is Oklahoma City.

Etymology and nicknames

The name derives from the Choctaw words okla and humma, coined by Choctaw Nation of Oklahoma leader Allen Wright during negotiations, and adopted in the 19th century in connection with the Indian Territory (United States). Common nicknames include the "Sooner State", referencing the Land Run of 1889 and settlers known as "Sooners", the "Native America State" reflecting the presence of the Cherokee Nation, Chickasaw Nation, Choctaw Nation of Oklahoma, Creek (Muscogee) Nation, and Seminole Nation of Oklahoma, and the "Oil State" tied to the Oklahoma oil boom and companies such as Devon Energy and ConocoPhillips.

History

Indigenous peoples inhabited the region for millennia, including the Wichita people, Caddo people, and other Plains and Southeastern tribes later forced into the area by the Trail of Tears under policies enacted by Andrew Jackson and legislation like the Indian Removal Act. The 19th century saw the establishment of the Indian Territory (United States) and contested claims by the Republic of Texas. The discovery of oil at the Gordon "Oil Well" sites and the 1901 Spindletop-era boom (in neighboring Texas) catalyzed rapid growth; key Oklahoma discoveries included the Guthrie oilfield and Glenpool Oil Field. The Land Run of 1889 and subsequent runs reshaped settlement patterns and led to the incorporation of the Territory of Oklahoma and eventual statehood admitted through an act of Congress in 1907, influenced by figures such as William H. Murray and Charles N. Haskell. The 20th century brought events like the 1921 Tulsa race massacre, the Dust Bowl linked to the Great Plains drought of 1930s, and World War II military mobilization at installations such as Tinker Air Force Base. Late 20th- and early 21st-century developments include energy deregulation, the rise of aerospace corporations like Hughes Aircraft Company and Boeing suppliers, and political prominence of leaders such as J. C. Watts and Mary Fallin.

Geography and climate

Oklahoma spans diverse physiographic regions from the High Plains in the west through the Wichita Mountains and into the Arkansas River Valley, with the Ozark Plateau touching the northeast and the Ouachita Mountains to the southeast. Major rivers include the Arkansas River, Red River, and Canadian River. The state hosts reservoirs like Lake Eufaula (Oklahoma) and Grand Lake o' the Cherokees. Oklahoma's climate ranges from humid subtropical in the east, influenced by the Gulf of Mexico, to semi-arid steppe in the west, contributing to frequent severe weather; the state experiences some of the highest tornado frequencies in the Tornado Alley region and notable events such as the 1999 Oklahoma City tornado and 2013 Moore tornado.

Demographics

Population centers concentrate in the Oklahoma City metropolitan area and the Tulsa metropolitan area, with significant communities in Norman, Broken Arrow, and Lawton. The state has a sizable Native American population representing federally recognized nations including the Kiowa Tribe of Oklahoma, Osage Nation, and Pawnee Nation of Oklahoma. Hispanic and Latino communities have grown, with ties to migration patterns involving Mexico and the American Southwest. Educational institutions such as the University of Oklahoma and Oklahoma State University–Stillwater influence local demographics and workforce composition. Notable demographic challenges intersect with rural depopulation trends seen across the Great Plains and urbanization in metropolitan hubs.

Economy

Historic and contemporary economic drivers include oil and natural gas extraction, agriculture, and aerospace. Energy companies such as Chevron Corporation and Valero Energy have operations in the state, while agricultural production features cattle ranching, wheat from the Great Plains, and poultry. The aerospace sector includes defense contracting for United States Department of Defense programs and private aerospace firms. Tourism linked to sites like the National Cowboy & Western Heritage Museum, the Philbrook Museum of Art, and Route 66 (U.S. Route 66) contributes to service industries. Economic shifts have seen diversification into information technology, biotechnology startups tied to Oklahoma Medical Research Foundation, and film production incentives that attracted projects connected to Hollywood.

Government and politics

The state operates under a constitution adopted in 1907 establishing executive offices such as the Governor of Oklahoma, a bicameral legislature with the Oklahoma Senate and Oklahoma House of Representatives, and a judiciary culminating in the Oklahoma Supreme Court and the Oklahoma Court of Criminal Appeals. Political dynamics have included transitions from early 20th-century populist and progressive leaders to modern partisan patterns featuring the Republican Party and the Democratic Party in competitive roles. Notable federal representation has included senators and representatives who served on committees addressing energy, agriculture, and Native American affairs in the United States Congress.

Culture and education

Cultural life reflects Native American traditions, Western heritage, and music genres like country and the Tulsa sound associated with artists such as Leon Russell and J.J. Cale. The state hosts performing arts institutions including the Oklahoma City Philharmonic and the Tulsa Ballet, and festivals like Red Earth Festival showcase indigenous arts. Higher education institutions include University of Oklahoma, Oklahoma State University–Stillwater, University of Tulsa, and community colleges, offering programs in fields tied to state industries. The literary and visual arts scene features writers like Ralph Ellison (born in Oklahoma City) and visual artists exhibited at museums such as the Gilcrease Museum. Sports culture centers on collegiate teams like the Oklahoma Sooners and professional franchises such as the Oklahoma City Thunder.

Category:States of the United States