Oklahoma City is the capital and largest city in Oklahoma. According to the 2015 census, Oklahoma City, OK had a population of over 1.3 million and counting. When the city was founded in 1889, it was referred to as the "Unassigned Lands." By 1900, the population had doubled as settlers began moving in.
Oklahoma City became a major center for oil production in the late 1920s when oil was discovered within city limits. Because the city is located in the middle of an active oil field, the economy of Oklahoma City, OK is largely driven by oil, natural gas, and petroleum products.