The city of Northampton is the county seat of Hampshire County, Massachusetts, United States. As of the 2010 census, the population of Northampton's central neighborhoods, (excluding its outer, incorporated villages, Florence, Massachusetts and Leeds, Massachusetts,) was 28,549. Northampton is part of the Pioneer Valley, and also one of the northernmost cities in the Knowledge Corridor - a cross-state cultural and economic partnership with other Connecticut River Valley cities and towns.
Northampton is home to Smith College and the Clarke School for the Deaf. Smith students (along with those of the associated Five Colleges) contribute to Northampton's "college town" atmosphere.
Today, Northampton is known as an artistic, musical, and counter-culture hub. It features a large and politically influential LGBT community, along with numerous alternative health and intellectual organizations. Based on U.S. Census demographics, election returns, and other criteria, the website Epodunk rates Northampton as the most politically liberal medium-sized city (population 25,000-99,000) in the United States.