Greenville is a borough in Mercer County, Pennsylvania, United States. Located along the Shenango River, it lies roughly 80 miles from both Pittsburgh and Cleveland. It is just under 2.0 square miles in area, and had a population of 6380 in the 2000 U.S. census.
Greenville is part of the Youngstown-Warren-Boardman, OH-PA Metropolitan Statistical Area, and was designated a financially distressed municipality in 2002 by the Commonwealth of Pennsylvania.
It is home to the Werner Company, the world's largest manufacturer of step and extension ladders.
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