A state in South Central United States
- Oklahoma is the 20th most extensive and the 28th most populous of the 50 United States.
- The Oklahoma City is its capital.
- The state name was derived from the Choctaw words okla and humma, meaning "red people".
- The people of the stare are called Oklahomans or Okies.
- At 1,999 feet (609 m), the Cavanal Hill is regarded as world's tallest hill.
- The state joined as the 46th state of the US on November 16, 1907.
- The Oklahoma City bombing of April 19, 1995 killed 168 people, including 19 children.
- 24% of the land in the state is covered by forests.
- The state has 34 major reservoirs. More water is used for irrigation than anything else.
- The state is one of 32 states with capital punishment as a legal sentence.
- Milk is the state beverage.
- Strawberry is the state fruit.
- Honeybee is the state insect.
- The world's largest deposit of alabaster is at Alabaster Caverns near Freedom.
- Vinita was the first city in Oklahoma to have electricity.
- It is one of three states that produce Helium and the only state to produce Iodine.
- The state has produced more astronauts than any other state.