Geography thumb|Fort Yamhill blockhouse, in Courthouse Square Park Dayton is located in the Willamette Valley, approximately southwest of Portland and east of McMinnville.
geography ThuMb|fORT YaMhill blOckHOusE, In coURThouse SQUAre parK dayTon Is lOCated IN the wiLlAMETte Valley, ApProxIMately soUtHWeSt of PorTLaNd aNd eaSt of McminnvIlle.