<P> Jersey City is the second-most - populous city in the U.S. state of New Jersey , after Newark . It is the seat of Hudson County as well as the county 's largest city . As of 2016 , the Census Bureau 's Population Estimates Program calculated that Jersey City 's population was 264,152 , with the largest population increase of any municipality in New Jersey since 2010 , an increase of about 6.7 % from the 2010 United States Census , when the city 's population was at 247,597 , ranking the city the 77th - largest in the nation . </P>
<P> Jersey City is the second-most - populous city in the U.S. state of New Jersey , after Newark . It is the seat of Hudson County as well as the county 's largest city . As of 2016 , the Census Bureau 's Population Estimates Program calculated that Jersey City 's population was 264,152 , with the largest population increase of any municipality in New Jersey since 2010 , an increase of about 6.7 % from the 2010 United States Census , when the city 's population was at 247,597 , ranking the city the 77th - largest in the nation . </P>
what county is jersey city nj located in
what county is jersey city nj located in
U.S. state
U.S. state