Holbrook is an unincorporated community in Multnomah County, Oregon, United States.
[1] It is located on U.S. Route 30 about 15 miles northwest of Portland between the Tualatin Mountains and the Multnomah Channel south of Sauvie Island.
[2] Holbrook's elevation is 135 feet above sea level.
[1] The community was named for pioneer Philo Holbrook, who owned a farm nearby.
[3] Holbrook had a post office from 1887 to 1933.