Clatskanie Home Education Network (CHEN)
CHEN was created so that homeschoolers in Clatskanie have a resource for sharing information. We discuss upcoming group events; techniques and suggestions; curriculum and educational resources; ideas on ways to save money; and give each other support in the rewarding task of educating our children.
http://groups.yahoo.com/group/Clatskanie_Home_Education_Network/

Columbia County Homeschoolers (CCH)
An online email support group, open to all families who homeschool in and around Columbia County, to provide meaningful support, general information about home schooling in our community, group activities and field trips, as well as other home educational support, encouragement and information. CCH is a member-led support group, we therefore encourage all of our members to contribute to our discussions, lend support to others, plan activities and informal get-togethers, and arrange field trips and other opportunities.
http://groups.yahoo.com/group/columbiacountyhomeschoolers/

Facebook Page: Cowlitz/Columbia County Homeschoolers

Southwest Washington Homeschoolers (SWWAH)
This group is for homeschoolers in Southwest Washington State (and Northwest Oregon). It is for all homeschooling families wanting to stay connected to events happening in our area. It is also for sharing ideas & support in homeschooling. SW-WA-Homeschoolers is not religiously affiliated, or affiliated with any particular organization or group.
http://groups.yahoo.com/group/SWWAH/