Jersey City is the second-most populous city in the U.S. state of New Jersey, after Newark. It is the county seat of Hudson County and is the county's most populous city and its largest by area. As of the 2020 United States census, the city's population was 292,449, an increase of 44,852 (+18.1%) from the 2010 census count of 247,597, in turn an increase of 7,542 (+3.1%) from the 240,055 enumerated at the 2000 census. The Population Estimates Program calculated a population of 291,657 for 2023, making it the 72nd-most populous municipality in the nation. With more than 40 languages spoken in more than 52% of homes and as of 2020, 42.5% of residents born outside the United States, it is the most ethnically diverse city in the United States.