Multnomah County Oregon Court in Circuit Court Municipal Courts Circuit Courts in Multnomah County Multnomah County Circuit CourtMultnomah County Courthouse1021 SW 4th Avenue, Portland, OR 97204Phone: 503-988-3957Fax: 503-988-5773 Multnomah County Circuit CourtJustice Center1120 SW 3rd Avenue, Portland, OR 97204Phone: 503-988-3641 Multnomah County Circuit Court – East CountyEast County Courthouse18480 SE Stark Street, Portland, OR 97233Phone: 503-988-3199 Multnomah County Circuit Court – JuvenileJuvenile Justice Center1401 NE 68th Avenue, Portland, OR 97213Phone: 503-988-3022 ext. 5 Municipal Courts in Multnomah County Troutdale Municipal Court219 East Historic Columbia River Highway, Troutdale, OR 97060Phone: 503-665-5175Fax: 503-667-6403