Warren is a city located in the state of Pennsylvania within the United States. It serves as the county seat of Warren County and is situated along the Allegheny River. As of the 2020 census, the city had a population of 9,404 residents.
The city functions as the principal city of the Warren micropolitan area. It hosts several notable organizations and institutions, including the headquarters for the Cornplanter State Forest and the Allegheny National Forest. Additionally, Warren is the home of the catalog company Blair and the Chief Cornplanter Council, which holds the distinction of being the oldest continuously chartered Boy Scouts of America Council.