Troutdale is a city in Multnomah County, Oregon, United States, immediately north of Gresham and east of Wood Village. As of the 2020 census, the city population was 16,300. The city serves as the western gateway to the Historic Columbia River Highway, the Mount Hood Scenic Byway, and the Columbia River Gorge. It is approximately 12 miles (19 km) east of Portland and is part of the Portland, Oregon metropolitan area.