Orenco (/ɒrˈrɛnkoʊ/, orr-REN-koh) is a former company town in Washington County, Oregon, United States, located between Hillsboro and Aloha.

[3] Orenco is located in the Tualatin Valley, with Rock Creek and other smaller streams running through the area.

European American pioneers first arrived in the Orenco area in the mid-1850s, after the Donation Land Claim Act of 1850 encouraged settlers to travel to Oregon.

[5] At the turn of the century Archibald McGill and Malcolm McDonald formed the Oregon Nursery Company.

[8] Also in 1908, the Oregon Electric Railway began interurban service on its line between Forest Grove and Portland.

[7] Services in the town were water, sewer, telephones, electricity, street lighting, and a third-class post office.

[7] Oregon Nursery Company founder Malcolm McDonald's home, listed on the National Register of Historic Places, is still located on the north end of the property that was formerly The Orenco Woods Golf Course.

[10] The golf course opened in 1953 and was owned and operated by the Hillsboro Elks Lodge until it was sold to developers and closed in 2006.