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OKOklahoma History
Oklahoma at a glance
Oklahoma was admitted to the Union on 1907, making it the 46th state. It joined the country 131 years after the Declaration of Independence. Its capital Oklahoma City has been the seat of state government for most of the state's history.
Native peoples
For thousands of years before European contact, Indigenous peoples lived across what is now Oklahoma. Multiple distinct cultures developed in response to the region's geography — coastal peoples, plains peoples, river-valley peoples, mountain peoples — each with their own languages, governance, and trade networks. European colonization disrupted these civilizations dramatically, often through disease, displacement, and forced removal. Today, Oklahoma's Native heritage is preserved in place names, tribal nations within state borders, and ongoing cultural practices.
French colonial era
French explorers and traders moved through Oklahoma as early as the 17th century. French influence is visible in place names, Catholic religious traditions, and (where applicable) Cajun or Creole cultures. France controlled vast portions of central North America before losing the territory to Spain (1762), then to the US (Louisiana Purchase, 1803).
The Louisiana Purchase (1803)
Oklahoma was part of the territory the United States acquired from France in 1803 for $15 million — the Louisiana Purchase, which doubled the size of the country overnight. The purchase set in motion decades of westward exploration and settlement, including the Lewis and Clark Expedition (1804-1806).
Path to statehood
The path from European exploration to statehood typically took decades. Oklahoma was admitted to the Union on 1907, after meeting the requirements set by Congress: sufficient population, a written constitution, and the consent of Congress. The process from initial settlement to statehood was the 121st time the US expanded.
The modern era
Today Oklahoma has a population of 1 to 5 million and is one of the mid-sized states in the country. The capital is Oklahoma City; the largest city is Oklahoma City. The economy benefits significantly from oil and natural gas production. Agriculture remains an important sector of the state economy. The political lean has shifted over time and now leans reliably Republican.
Key historical sites in Oklahoma
Oklahoma preserves its history through state parks, national monuments, historic districts, and museums. Battlefields, colonial towns, mission sites, Native American heritage areas, and Civil Rights landmarks (where applicable) anchor the state's heritage tourism. Visit the state's official tourism site for a current list.
Bordering states
Oklahoma shares borders with 6 other US states.
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Play today's puzzle →Common questions about Oklahoma history
When did Oklahoma become a state?
Oklahoma became a state in 1907, making it the 46th state admitted to the Union.
Was Oklahoma part of the Confederacy?
No, Oklahoma was not part of the Confederacy.
Was Oklahoma part of the Louisiana Purchase?
Yes, Oklahoma was acquired by the US as part of the 1803 Louisiana Purchase from France.
Did Spain or France colonize Oklahoma?
Yes, French exploration and settlement marked early Oklahoma history.
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