Erie is a city on the south shore of Lake Erie and the county seat 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 2023 had decreased to 92,732. The Erie metropolitan area, equivalent to all of Erie County, had a population of 270,876 as of the 2020 United States Census. The Erie–Meadville combined statistical area had a population of 354,814 at the 2020 census. Erie is located approximately 80 mi from Buffalo, 90 mi from Cleveland, and 120 mi from Pittsburgh. Erie's manufacturing sector remains prominent in the local economy, while insurance, healthcare, higher education, technology, service industries, and tourism are emerging as significant economic drivers. Like the other Great Lakes port 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, with warm summers and harsh winters, owing to its southern lakeshore location.