Stillwater is a city in north-central Oklahoma at the intersection of U.S. 177 and State Highway 51. It is the county seat

County seat

A county seat is an administrative center, or seat of government, for a county or civil parish. The term is primarily used in the United States....

 of Payne County, Oklahoma

Oklahoma

Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. As of the 2010 census, the city population was 45,688. Stillwater is the principal city of the Stillwater Micropolitan Statistical Area which had a population of 77,350 according to the 2010 census. Stillwater was part of first Land Run held April 22, 1889, when Oklahoma Territory's Unassigned Lands

Unassigned Lands

Unassigned Lands, or Oklahoma, were in the center of the lands ceded to the United States by the Creek and Seminole Indians following the Civil War and on which no other tribes had been settled...

 were opened for settlement.