The following list presents the full set of National Register of Historic Places listings in Multnomah County, Oregon. However, please see separate articles for listings in each of Portland's six quadrants.
Fort Yamhill was an American military fortification in the state of Oregon. Built in 1856 in the Oregon Territory, it remained an active post until 1866. The Army outpost was used to provide a presence next to the Grand Ronde Agency Coastal Reservation. Several officers stationed at the United States Army post prior to the American Civil War would later serve as generals in that war.
Willamette Mission State Park is a state park in the U.S. state of Oregon, located about four miles (6 km) north of Keizer adjacent to the Wheatland Ferry and east of the Willamette River. It includes Willamette Station Site, Methodist Mission in Oregon, which is listed by the National Register of Historic Places.
The Edward F. Sharp Residential Ensemble, also known as the Sharp Family Residential Ensemble, is a set of three adjacent historic houses in The Dalles, Oregon, United States. Edward Sharp (1865–1954) was the county surveyor and roadmaster whose work underlies much of the development in The Dalles and Wasco County. As the official surveyor for the Eastern Oregon Land Company, he also conducted important early surveys across large stretches of Oregon and Idaho. He built the houses at 400 and 404 E. 4th Street for himself and his family, and the house at 504 Federal Street for employees (1900). Because the houses remained under common ownership in the Sharp family for many years, they have retained an exceptional level of preservation. The houses on 4th Street are also exceptional local examples of the Queen Anne (400) and Craftsman (404) styles.
The Lame–Smith House and the Sydney and Gertrude Smith Barn, about one mile northwest of Halsey, Oregon, are historic structures that were listed on the National Register of Historic Places in 1999.
The Cochran–Rice Farm Complex, which included the Dr. Pierce's Pleasant Pellets Barn, is located in Cottage Grove, Oregon. The complex was listed on the National Register of Historic Places (NRHP) in 1991. The barn was demolished in 2012 following the expiration of a 20-year easement held by the local historical society.
The Joseph Kendall House is a house in southeast Portland, Oregon, that is listed on the National Register of Historic Places.
The Lewis Anderson House, Barn and Granary is a historic ensemble of buildings, currently located in The Dalles, Oregon, United States. This well-preserved set of 1890s Swedish American vernacular architecture was originally located on a farm on Pleasant Ridge, south of The Dalles. Lewis Anderson was a Swedish immigrant who, after establishing himself on Pleasant Ridge, worked semi-successfully to encourage further Swedish settlement in the area of The Dalles. The sidehill barn, with grade entrances on two levels, was the first erected of the ensemble, in 1890. The house was built by Anderson and fellow Swedish immigrant Ab Pearson in 1895. Anderson purchased and relocated the granary from a neighboring farm in 1898, in the process repurposing it from its previous function as a house.
