Dalhart is a city in Dallam and Hartley counties in the U.S. state of Texas, and the county seat of Dallam County. The population was 7,930 at the 2010 census.
Founded in 1901, Dalhart is named for its location on the border of Dallam and Hartley Counties; its name is a portmanteau of the names of the two counties. The city was founded at the site of a railroad junction, which heavily contributed to its early growth.
Dalhart was in the center of the Dust Bowl, an area adversely affected by a long period of drought and dust storms during the Great Depression of the 1930s. Here, Tex Thornton, operating on the now debunked concussion theory, coaxed today's inflation-adjusted equivalent of $1 million from the locals on claims he could fire rocket-powered explosives into the clouds and cause rain.
At the Dallam County Courthouse, Dalhart honors the memory of James R. Fox, Jr. (March 16, 1919—March 11, 1943), who flew supplies to China for Pan American Airways, then a joint Chinese and American company, during World War II through the treacherous Hump Route. Fox and his two Chinese copilots were killed when their Douglas C-52 cargo plane crashed. In 2002, the People's Republic of China made a bronze bust in Fox's honor and presented it to Dalhart.
Dalhart is located in northwestern Texas at 36°3′39″N 102°31′7″W (36.060856, −102.518656). According to the United States Census Bureau, the city has a total area of 4.8 square miles (12.4 km2), of which 0.01 square miles (0.03 km2), or 0.21%, is covered by water. Dalhart sits in the Southern Great Plains and is heavily impacted by its agriculture industry.