Editing Richland, Washington (section)

===Cold War era===
With the end of the war, the Hanford workers' camp, originally located {{convert|15|mi|km|spell=in}} north of Richland at the old Hanford town site, was closed down. Although many of the workers moved away as the war effort wound down, some of them moved to Richland, offsetting the depopulation that might otherwise have occurred.{{citation needed|date=October 2024}} Management of the Hanford site and Richland itself was transferred to [[General Electric]].<ref name="HistoryLink"/>

Fears that the [[Soviet Union]]'s intentions were aggressive set off the [[Cold War]] in 1947. The capacity to produce plutonium was increased beginning in 1947. When the Soviet Union developed and tested its first nuclear weapon in 1949, the U.S. nuclear program was reinvigorated. A second post-WWII expansion began in 1950 due to the war in Korea. Richland's Cold War construction boom resulted in Richland's population growing to 27,000 people by 1952. Many of these people lived in a construction camp of trailers located in what is now north Richland. With time, these trailers were vacated and the core city grew. Others lived at [[Camp Columbia (Hanford)|Camp Columbia]] near [[Horn Rapids Dam|Horn Rapids]] until the camp was closed in 1950. In 2005 several dozen houses built in the northern part of the core city during this boom were added to the [[National Register of Historic Places]] as the [[Gold Coast Historic District (Richland, Washington)|Gold Coast Historic District]].