Bartlesville is a city mostly in Washington county in the U.S. state of Oklahoma. The population was 35,750 at the 2010 census, with a 2013 estimate of 36,258 according to the US Census Bureau. Bartlesville is north of Tulsa and from Oklahoma's northern border with Kansas. It is the county seat of Washington County. The Caney river runs through Bartlesville.
Bartlesville is the primary city of the Bartlesville Micropolitan area, which consists of Washington County and has a population of 50,976 as of 2010. Bartlesville Micropolitan area is also part of the Tulsa Combined Statistical Area CSA with a population of 988,454 as of 2010.
Bartlesville is notable as the longtime home of Phillips Petroleum Company. The company merged with Conoco as ConocoPhillips and later split into the two independent companies Phillips 66 and ConocoPhillips. Both companies remain in Bartlesville. Frank Phillips founded Phillips Petroleum in Bartlesville in 1905 when the area was still Indian Territory.