List of United States cities by population density in the context of "NYC"

New York, often called New York City (NYC), is the most populous city in the United States. It is located at the southern tip of New York State on New York Harbor, one of the world's largest natural harbors. The city comprises five boroughs, each coextensive with its respective county. It is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York is a global center of finance and commerce, culture, technology, entertainment and media, academics and scientific output, the arts and fashion, and, as home to the headquarters of the United Nations, international diplomacy.

With an estimated population in July 2024 of 8,478,072, distributed over 300.46 square miles (778.2 km), the city is the most densely populated major city in the United States. New York City has more than double the population of Los Angeles, the country's second-most populous city. Over 20.1 million people live in New York City's metropolitan statistical area and 23.5 million in its combined statistical area as of 2020, both the largest in the U.S. New York City is one of the world's most populous megacities. The city and its metropolitan area are the premier gateway for legal immigration to the United States. An estimated 800 languages are spoken in New York City, making it the most linguistically diverse city in the world. The New York City metropolitan region is home to the largest foreign-born population of any metropolitan region in the world, approximately 5.9 million as of 2023.

San Francisco, officially the City and County of San Francisco, is a commercial, financial, and cultural center of Northern California. With an estimated population of 827,526 residents as of 2024, San Francisco proper is the fourth-most populous city in the U.S. state of California and the 17th-most populous in the United States. Among U.S. cities proper with over 300,000 residents, San Francisco is ranked second by population density, first by per capita income, and sixth by aggregate income as of 2023. Depending on how its borders are defined, the broader San Francisco metropolitan area or San Francisco Bay Area is home to 4.6–9.2 million residents. In 2024, the U.S. Census Bureau reported an estimated population of 4,648,486 for the city's metropolitan statistical area (13th-largest in the U.S.) and 9,164,058 residents for the larger combined statistical area (5th-largest).

Prior to European settlement, the modern city proper was inhabited by the Yelamu Ohlone. On June 29, 1776, settlers from New Spain established the Presidio of San Francisco at the Golden Gate, and the Mission San Francisco de Asís a few miles away, both named for Francis of Assisi. The California gold rush of 1849 brought rapid growth, making it the largest city on the West Coast at the time. In 1856, San Francisco became a consolidated city-county. After three-quarters of the city was destroyed by the 1906 earthquake and fire, it was quickly rebuilt, hosting the Panama–Pacific International Exposition nine years later. In World War II, it was a major port of embarkation for naval service members shipping out to the Pacific Theater. After the war, the confluence of returning servicemen, significant immigration, liberalizing attitudes, the rise of the beatnik and hippie countercultures, the sexual revolution, opposition to U.S. involvement in the Vietnam War, and other factors led to the Summer of Love and the gay rights movement, cementing San Francisco as a center of liberal activism.

Somerville (/ˈsʌmərvɪl/ SUM-ər-vil) is a city located directly to the northwest of Boston, and north of Cambridge, in Middlesex County, Massachusetts, United States. As of the 2020 United States census, the city had a total population of 81,045 people. With an area of 4.12 square miles (10.7 km), the city has a density of 19,671/sq mi (7,595/km), making it the most densely populated municipality in New England and the 19th most densely populated incorporated municipality in the country. Somerville was established as a town in 1842, when it was separated from Charlestown. In 2006, the city was named the best-run city in Massachusetts by The Boston Globe. In 1972, 2009, and 2015, the city received the All-America City Award. It is home to Tufts University, which has its campus along the Somerville and Medford border. Tufts, alongside Harvard University and the Massachusetts Institute of Technology, makes up one corner of the Brain Power Triangle, which thus includes the city of Somerville.

New York, often called New York City (NYC), is the most populous city in the United States. It is located at the southern tip of New York State on New York Harbor, one of the world's largest natural harbors. The city comprises five boroughs, each coextensive with its respective county. It is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York is a global center of finance and commerce, culture, technology, entertainment and media, academics and scientific output, the arts and fashion, and, as home to the headquarters of the United Nations, international diplomacy.

With an estimated population in July 2024 of 8,478,072, distributed over 300.46 square miles (778.2 km), the city is the most densely populated major city in the United States. New York City has more than double the population of Los Angeles, the country's second-most populous city. Over 20.1 million people live in New York City's metropolitan statistical area and 23.5 million in its combined statistical area as of 2020, both the largest in the U.S. New York City is one of the world's most populous megacities. The city and its metropolitan area serve as the premier gateway for legal immigration to the United States. An estimated 800 languages are spoken in New York City, making it the most linguistically diverse city in the world. The New York City metropolitan region is home to the largest foreign-born population of any metropolitan region in the world, approximately 5.9 million as of 2023.

Hoboken (/ˈhoʊboʊkən/ HOH-boh-kən; Unami: Hupokàn) is a city in Hudson County in the U.S. state of New Jersey. Hoboken is part of the New York metropolitan area and is the site of Hoboken Terminal, a major transportation hub. As of the 2020 United States census, the city's population was 60,419, an increase of 10,414 (+20.8%) from the 2010 census count of 50,005, which in turn reflected an increase of 11,428 (+29.6%) from the 38,577 counted in the 2000 census. The Census Bureau's Population Estimates Program calculated a population of 57,010 for 2023, making it the 708th-most populous municipality in the nation. With more than 42,400 inhabitants per square mile (16,400/km) in data from the 2010 census, Hoboken was ranked as the third-most densely populated municipality in the United States among cities with a population above 50,000. In the 2020 census, the city's population density climbed to more than 48,300 inhabitants per square mile (18,600/km) of land, ranked fourth in the county behind Guttenberg, Union City and West New York.

Hoboken was first settled by Europeans as part of the Pavonia, New Netherland colony in the 17th century. During the early 19th century, the city was developed by Colonel John Stevens, first as a resort and later as a residential neighborhood. Originally part of Bergen Township and later North Bergen Township, it became a separate township in 1849 and was incorporated as a city in 1855. Hoboken is the location of the first recorded game of baseball and of the Stevens Institute of Technology, one of the oldest technological universities in the United States.