Oklahoma is a south-central US state in the heart of Tornado Alley, with rich Native American heritage (more than 39 tribal nations), oil-and-gas economy, and the historic Route 66.
Geography & climate
Oklahoma lies in the South of the United States, set at approximately 35.5°N, 97.5°W and falling within a temperate climate band. The state covers around 181,037 km² of land, with topography that runs from coastal lowlands and river basins to interior plains and (where present) mountain ranges. Local weather, growing seasons and outdoor recreation in Oklahoma all flow from this geographic profile.
Capital, principal city & population
The capital of Oklahoma is Oklahoma City, where the legislature, governor’s office and state supreme court are based. The largest city by population is Oklahoma City, often the economic and cultural anchor of the state. Total population sits at around 4M, distributed across metropolitan areas, smaller cities, and rural counties — each with its own dialect, demographics and economic character.
Statehood & history
Oklahoma was admitted to the Union in 1907 as the 46th state. The path to admission typically passed through territorial status, an enabling act of Congress and the drafting of a state constitution. Each generation since has added its layer to the state’s political and cultural identity — from frontier settlement and industrial expansion to the civic and demographic shifts of the modern era.
Symbols & emblems
Oklahoma is nicknamed “The Sooner State”, with the state motto Labor omnia vincit (Labour conquers all things). The state seal, flag and coat of arms each carry historic meaning, often referencing founding settlers, native communities, agricultural roots or pivotal episodes of state history. State legislatures have additionally adopted official symbols — a state bird, flower, tree, song, fossil and more — chosen by lawmakers (and sometimes by schoolchildren) to celebrate distinctive elements of the state’s natural and cultural heritage.
Economy & industry
The economy of Oklahoma is shaped by its geography, infrastructure and population centres. Major sectors typically span agriculture, manufacturing, energy or natural resources, services, tourism and (in metropolitan corridors) finance and technology. Federal facilities, military bases and research institutions can also be substantial regional employers in Oklahoma.
Travel, food & culture
For visitors, Oklahoma offers a mix of urban culture (museums, music venues, sports teams, cuisine) and outdoor experience (state parks, trails, coastline or mountains, depending on the geography). Regional foodways, festivals and dialects make travel between counties feel meaningfully different — even short drives across Oklahoma can shift the cultural landscape noticeably.
By the numbers
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| Field | Value | Note |
|---|---|---|
| Abbreviation | OK | two-letter postal code |
| Capital | Oklahoma City | — |
| Largest city | Oklahoma City | — |
| US region | South | — |
| Population | 4M | people |
| Area | 181,037 | km² |
| Statehood | 1907 | year admitted |
| Admission order | 46 | order joining the Union |
| Nickname | The Sooner State | — |
| Motto | Labor omnia vincit (Labour conquers all things) | — |
| Latitude | 35.5 | degrees |
| Longitude | -97.5 | degrees |
Did you know?
Oklahoma is the only US state with a population that has 39 federally recognised tribal nations — more than any other state.