|Yamhill County Oregon Cities/Towns - Dundee, McMinnville (County Seat), Newberg, Sheridan, Willamina
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Yamhill County is a county located in the U.S. state of Oregon. The 2004 population estimate for Yamhill County is 90,723. The county seat is located at McMinnville.
According to Oregon Geographic Names, the origin of the name is uncertain, but is probably from an explorer's name for a local Native American tribe, the Yamhill, who are part of the North Kalapuyan family.