McDonald is a borough in Allegheny and Washington counties in the U.S. state of Pennsylvania, 18 miles southwest of Pittsburgh. In the past, factories of bottles, oil-well drilling tools, flour-mill products, etc., existed here. Oil and coal were and still are procured in the area. The population was 2,149 at the 2010 census. Of this, 1,766 were in Washington County, and 383 were in Allegheny County. McDonald's government includes an elected mayor,... Show more

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