Greensburg is a city in Westmoreland County, Pennsylvania, United States, and a part of the Pittsburgh Metro Area. The city is named after Nathanael Greene, a major general of the Continental Army in the American Revolutionary War. Greensburg is the county seat of Westmoreland County, with a population of 15,889 people residing in the city, and a combined total of around 70,000 people in the Greensburg/Hempfield area.Located southeast of Pittsburgh, Greensburg is a major business, tourism and cultural center in Western Pennsylvania. It is evident as the city's population doubles during work hours. The city ranks seventh in Pennsylvania in terms of daytime growth, behind Pittsburgh, Philadelphia, Harrisburg, King of Prussia, Lancaster, and State College. It also ranks 16th in the United States for daytime growth among towns with a resident population between 15,000 to 24,999. In 2007, Greensburg was designated as one of the "Best Places to Retire" in Pennsylvania by U.S. News & World Report.