Glassport is a borough in Allegheny County, Pennsylvania, United States, approximately 10 miles (16 km) south of Pittsburgh and the confluence of the Monongahela and Allegheny rivers where they form the Ohio River. Glassport lies along the east side of the Monongahela River in the "Mon valley", where many blue-collar municipalities have suffered severe economic decline in the wake of the loss of steel-making throughout the Greater Pittsburgh area. In 1910, the population of Glassport was 5,540. By 1940, it had risen to 8,748, but has since declined to 4,483 as of the 2010 census.
The Mayor of Glassport is Keith DiMarco. Mayor DiMarco's term in office began in 2018.
Glassport is served by the South Allegheny School District.
Information requiring updates.
Glassport is located at 40°19′37″N 79°53′19″W.
According to the United States Census Bureau, the borough has a total area of 1.9 square miles (4.9 km2), of which 1.7 square miles (4.4 km2) is land and 0.2 square miles (0.52 km2), or 11.05%, is water.
Glassport has four land borders, including McKeesport to the north, Port Vue to the northeast, Liberty to the east, and Lincoln to the southeast. Across the Monongahela River to the west, Glassport runs adjacent with Dravosburg (with direct connector via Mansfield Bridge), West Mifflin, and Clairton (with direct connector via Clairton-Glassport Bridge).