Erie (; EER-ee) is a city on the south shore of Lake Erie and the county chair of Erie County, Pennsylvania, United States. Erie is the fifth largest city in Pennsylvania and the largest city in Northwestern Pennsylvania with a population of 94,831 at the 2020 census. The estimated population in 2021 had decreased to 93,928. The Erie metropolitan area, equivalent to everything of Erie County, consists of 266,096 residents. The Erie–Meadville cumulative statistical Place had a population of 369,331 at the 2010 census.

Erie is regarding equidistant from Buffalo and Cleveland, each being not quite 100 miles (160 kilometers) away. Erie’s manufacturing sector remains prominent in the local economy, though insurance, healthcare, higher education, technology, service industries, and tourism are emerging as significant economic drivers. As afterward the other Great Lakes harbor cities, Erie is accessible to the oceans via the Lake Ontario and St. Lawrence River network in Canada. The local climate is humid, four-seasonal and snowy but retains moderated winters thanks to the lakeside location.

The city was named for the Native American Erie people who lived in the Place until the mid-17th century. It is known as the “Flagship City” because of its status as the house port of Oliver Hazard Perry’s flagship Niagara. It is assumed name the “Gem City” because of the lake’s sparkling appearance caused by the daylight. Erie won the All-America City Award in 1972. In 2012, Erie hosted the Perry 200, a commemoration celebrating 200 years of goodwill between Britain, America, and Canada subsequent to the War of 1812 and Battle of Lake Erie.

Indigenous peoples occupied the shoreline and bluffs in this area for thousands of years, taking advantage of the wealthy resources. The Sommerheim Park Archaeological District in Millcreek Township west of the city, includes artifacts from the Archaic period in the Americas and the Early and Middle Woodland Period, roughly a span from 8,000 BCE to 500 CE.