Hunterdon County is a county located in the western section of the U.S. state of New Jersey. The county had a Census-estimated population of 125,488 in 2015, representing a 2.2% decrease from the 128,349 enumerated in the 2010 United States Census, in turn increasing by 6,360 (+5.2%) from the 121,989 counted in the 2000 Census, retaining its position as the state's 14th-most populous county. The percentage increase in population between 2000 and 2010 was the largest in New Jersey, almost triple the statewide increase of 4.5%, and the absolute increase in residents was the third highest. It is part of the New York Metropolitan Area. Its county seat is Flemington. The Bureau of Economic Analysis ranked the county as having the 19th-highest per capita income of all 3,113 counties in the Unite