Oklahoma (pop: 3,450,654), "The Sooner State", lies mostly in the Southern Great Plains and Eastern Woodlands regions and is bounded on the east by Arkansas and Missouri, on the north by Kansas and northwest by Colorado, on the far west by New Mexico and on the south and near-west by Texas.

Oklahoma City, with a population of 1.3 million in the metro area,is the capital and largest city. It is the principal economic engine of the state, centered on the finance, retail, governance, entertainment, and tourism sectors. Tulsa, Oklahoma's second largest city, has a reputation for being a "cosmopolitan" city and is centered around energy, aerospace and telecommunications - and the city has the nation's most inland waterport.

Oklahoma is a major fuel and food-producing state. Thousands of oil and natural gas wells dot the Oklahoma landscape. Millions of white-faced beef cattle graze on Oklahoma's flat plain and low hills. Fertile fields produce vast crops of wheat. Its agricultural outputs are cattle, wheat, milk, poultry, and cotton.

• Broken Arrow
• Edmond
• Enid
• Lawton
• Midwest City
• Moore
• Norman
• Oklahoma City
• Stillwater
• Tulsa