Glencoe is a neighborhood and former community in Washington County, Oregon, United States. Founded in 1842, the town, which was north of Hillsboro, died off after 1910 when neighboring North Plains was created to the west. Most of Glencoe is now a part of North Plains. Glencoe gives its name to the road connecting Hillsboro to North Plains, as well as the name of the second high school built in Hillsboro, Glencoe High School.

Hillsboro is a city in the U.S. state of Oregon and is the county seat of Washington County. Situated in the Tualatin Valley on the west side of the Portland metropolitan area, the city hosts many high-technology companies, such as Intel, locally known as the Silicon Forest. The population was 106,447 at the 2020 census, making Hillsboro the 5th most populous city in Oregon.