Norman is the 3rd most populous city in the U.S. state of Oklahoma, with a population of 128,026 as of the 2020 census. It is the most populous city and the county seat of Cleveland County and the second-most populous city in the Oklahoma City metropolitan area after the state capital, Oklahoma City, 20 miles north of Norman. The city was settled during the Land Run of 1889, which opened the former Unassigned Lands of Indian Territory to American pioneer settlement.