Welcome to Clackamas County

Serving Clackamas County Residents since 1917

 The Oregon State University Extension Service provides objective, researched-based knowledge and education that strengthens local economies, sustains natural resources, and promotes healthy communities, families, and individuals. Clackamas County Extension serves local citizens with programs in:

Help us celebrate 100 years of Extension in Clackamas County. Find this and more in the OSU Extension Service of Clackamas County Community Report 2016-2017.

Tree School registration is now closed.

  • 4-H, Enrollment packets can downloaded here.
  • For Agriculture questions, go to the North Willamette Research & Extension Center website
  • Family and Community Health, Free pressure gauge testing, registration for Food Preservation classes are now open.
  • Home Gardening, Master Gardener clinic hours: Monday-Friday, 9:00am-12:00pm, 1:00-4:00pm.
  • Trees and Forests, Community Forestry Day, every second Saturday of the month at Hopkins Demonstration Forest. Call ahead to be included for lunch, 503-632-2150.
  • Read the latest issue of our bi-monthly publication, Focus on Extension highlighting Extension programs in Clackamas County. 
  •  Care about (dairy) cows? Check out our new dairy extension blog, Dairy Bearing! Here is a clickable way for us at OSU to share research results, techniques, resources, announcements, and other items that might be of interest to anyone involved with dairy production.
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Our faculty, staff and volunteers provide:

  • Answers to questions and give advice by telephone, in person and email.

  • Informational tours, conferences, short courses, workshops and demonstrations.

  • Publications with specific research-based information on a variety of subjects.

  • Links to hundreds of research-based publications on our website.

Find us at:

200 Warner Milne Rd

Oregon City, OR 97045

503-655-8631 (phone)

503-655-8636 (fax)