After Newark, Jersey City is the most populous city in the state of New Jersey, which is located in the United States. It is the biggest city in Hudson County in addition to being the county seat for the county. The population of the city was estimated to be 292,449 during the United States Census in 2020, placing it as the 71st most populated incorporated place in the whole country. When compared to the results of the United States Census in 2010, which placed the city's population at 247,597, the results of the next census in 2020 reflect a rise of 18.1%.
The city's population dropped steadily over the course of half a century, from an all-time high of 316,715 residents in the 1930 census to its current count of 223,532 residents in the 1980 census. Since then, the city's population has rebounded, with the 2020 population reflecting an increase of 44,852 (18.1 percent) from the 247,597 counted in the 2010 Census, which had an increase of 7,542 (+3.1 percent) from the 240,055 counted in the 2000 Census, which had in turn increased by 11,518 (+5.0 percent) from the 228,537 counted in the 1990 Census.
The Hudson River and Upper New York Bay to the east, and the Hackensack River and Newark Bay to the west, form Jersey City's eastern and western borders, respectively. Jersey City is located in the New York metropolitan region. A port of entry, with 30.7 miles (49.4 km) of shoreline and substantial rail infrastructure and connections. Additionally, the city is a port of entrance. Jersey City and Manhattan are connected by substantial means of public transportation. The revitalization of the waterfront in Jersey City has resulted in the city being one of the most important locations for banking and finance in the United States. As a result, both the area and the city have earned the moniker "Wall Street West." Concurrently, Jersey City has undergone significant gentrification and has evolved into one of the most expensive places in the United States in which to make a living.