Oregon Military Museum

Clackamas ( CLAK-ə-məss) is an unincorporated community and former census-designated place (CDP) in Clackamas County, Oregon, United States, and is a suburb of Portland. The population was approximately 7,000 as of 2010. Clackamas is home to Camp Withycombe, which is a military base, and to a branch of the Kaiser Permanente Hospital.

Camp Withycombe, located in Clackamas County, Oregon, United States, was originally established as Camp Benson after Governor Frank W. Benson, but was later renamed Camp Withycombe during World War I for Governor James Withycombe.Originally known as the Clackamas Rifle Range, it was established as a training camp in 1909 and expanded during World War I, during which it served as a headquarters for the National Guard, a central supply depot and training center. Pendleton, Oregon photographer Walter S. Bowman photographed Camp Benson in the early 20th century.In the 1930s, the camp became a supply depot. Some of the buildings on the camp property, such as the Adjutant General's house (1938), were built by the Works Progress Administration (WPA). The camp still serves as a training facility, supply depot, and equipment repair facility for the National Guard, but the rifle range is now closed.

Oregon Iron Works, Inc. (OIW) is an American manufacturer of complex structural components and systems and specialized vehicles, located in the Clackamas area in the southeastern suburbs of Portland, Oregon (within the Portland metropolitan area). Established in 1944, it is involved in a number of different industries, supplying products ranging from high-speed boats for military use to purpose-built girders for roadway bridges. It has production facilities in Clackamas and in Vancouver, Washington, and currently employs about 400 people. In May 2014, the company announced that it was merging with Portland-based Vigor Industrial.

United Streetcar, LLC, was an American manufacturer of modern streetcars, located in the Clackamas area in the southeastern suburbs of Portland, Oregon, founded in 2005. It was the only U.S. company building modern streetcars—as distinct from light rail cars or new replicas of historic streetcars—until 2013, when Brookville received its first order for a modern (as opposed to faux historic) streetcar, for the Dallas Streetcar.United Streetcar was a limited liability company and was a wholly owned subsidiary of Oregon Iron Works, Inc. (OIW), which has been in business since 1944. It was originally reported to have been established in early 2007, after OIW was the successful bidder for a contract to construct a prototype streetcar for the city of Portland, but in 2010 the company clarified that it had been formed in December 2005. The company completed its first streetcar in 2009. It was dissolved in February 2015.

KPOJ (620 AM) is a radio station serving the Portland metropolitan area in the U.S. state of Oregon and neighboring Washington. It airs a sports format, and is affiliated with Fox Sports Radio. Its transmitter is located in Sunnyside, Oregon, and its studios are in Tigard, Oregon. The station is owned by iHeartMedia.

Clackamas Education Service District is an education service district that coordinates school events and activities throughout the school districts in Clackamas County, Oregon. Clackamas ESD serves the educational needs of students and families in Clackamas County – a geographic area of 1,879 square miles. Clackamas ESD is governed by a citizen-elected Board of Directors and an appointed advisor representing employment training. Five of the Board positions represent geographical zones and two are designated at-large. All members serve four-year terms.

Mount Talbert is a volcanic cinder cone in Clackamas County, Oregon. It is part of the Boring Lava Field, a zone of ancient volcanic activity in the area around Portland. Its summit rises to an elevation of 740+ ft (230+ m). The butte remains undeveloped and is the location of a nature park of the same name which is managed by North Clackamas Parks & Recreation District. The park has 4.2 miles (6.8 km) of hiking trails, including Park Loop, Summit and West Ridge Trail, along which there are several instructive signs about the area's natural resources. In 2005 the recreation district began promoting regrowth of more fire resistant white oak by girdling and removing Douglas firs, which impede the growth of the oaks by shading out the sun.

Kaiser Sunnyside Medical Center is a not-for-profit, general care hospital in the Sunnyside area of Clackamas County in the U.S. state of Oregon. Opened in 1975, the Kaiser Permanente owned facility is licensed for 233 hospital beds. Located in the Portland metropolitan area along Interstate 205 on the eastside, after Bess Kaiser Hospital in north Portland closed, it was Kaiser's only hospital in the Portland area until Westside Medical Center opened in 2013. The hospital includes Clackamas County's only heart surgery facility.

Sunnyside is a former census-designated place in Clackamas County in the U.S. state of Oregon. Located in the Portland metropolitan area along Interstate 205, the population was 6,791 at the 2000 census. The area was not recorded as a distinct place for the 2010 census.

Johnson City is a city in Clackamas County, Oregon, United States. The population was 566 at the 2010 census. Because of its small area, its population density is over 8,000 per square mile, making it the most densely populated city in Oregon.

Clackamas Web Academy is a public school in Clackamas, Oregon, United States.

Clackamas High School (CHS) is a public high school located in Clackamas, Oregon, United States. The school itself was built in 2002, replacing an older, smaller building built in 1957 which is now Alder Creek Middle School. Starting in the 2010–2011 school year, the campus included the former building of Sunrise Middle School. During the 2021-2022 school year, the East Campus building turned into Rock Creek Middle School.