sentences:  Warren County, New Jersey
  
  Warren County is a county located in the U.S. state of New Jersey.As of the 2019 Census estimate, the county's population was 105,267, making it the 19th-most populous of the state's 21 counties, representing a decrease of 3.2% from the 108,692 enumerated in the 2010 United States Census, in turn having increased by 6,255 (+6.1%) from 102,437 counted at the 2000 Census, Its county seat is Belvidere.