- About Extension
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- Statewide Locations
The Yamhill County Extension office is located in McMinnville, in the Willamette Valley of Oregon.
McMinnville is the Yamhill county seat.
Our street and mailing address:
2050 NE Lafayette Avenue
McMinnville, OR 97128
Main office phone: 503-434-7517, TOLL FREE 888-373-4628
Office fax: 503-472-3054
Office Hours: Monday through Friday, 8am-5pm, except holidays.