About Trenton

Trenton is the capital city of the U.S. state of New Jersey, the county seat of Mercer County and was the capital of the United States from November 1 to December 24, 1784. The city's metropolitan area, consisting of Mercer County, is grouped with the New York Metropolitan Area by the United States Census Bureau, but it directly borders the Philadelphia metropolitan area and was from 1990 until 2000 part of the Philadelphia Combined Statistical Area. As of the 2020 United States Census, Trenton had a population of 90,871, making it the state's 10th-largest municipality in 2010 and 2020, after having been the state's ninth-largest municipality in 2000. The population in 2020 stood at 90,871, an increase of 5,958 (+7.0%) from the 84,913 reported in the 2010 Census, reversing decades of population loss. Trenton dates back at least to June 3, 1719, when mention was made of a constable being appointed for Trenton while the area was still part of Hunterdon County.