city with over 100,000 people, behind only New York City (27,781 people per square mile of land) and San Francisco (17,859).After a peak population of 316,715 measured in the 1930 census, the city's population saw a half-century-long decline to 223,532 in the 1980 census. Jersey City, with a population density of 17,396 inhabitants per square mile (6,717/km2) as of 2013, had the third-highest density of any U.S.
The 2020 census represents an increase of 18.1% from the 2010 United States census, when the city's population was at 247,597. census showed that the city's population was 292,449 in 2020, ranking as the 71st-most-populous incorporated place in the nation. It is the seat of Hudson County as well as the county's largest city. Jersey City is the second-most populous city in the U.S.
