Dallas County may refer to:
Places in the USA:
- Dallas County, Alabama, founded in 1818, the first county in the United States by that name
- Dallas County, Arkansas
- Dallas County, Iowa
- Dallas County, Missouri
- Dallas County, Texas, the ninth most populous county in the United States
Other uses:
- Dallas County Community College District, in Texas
This disambiguation page lists articles about distinct geographical locations with the same name.
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