List of United States cities by population density

The following is a list of incorporated places in the United States with a population density of over 10,000 people per square mile. As defined by the United States Census Bureau, an incorporated place is a place that has a self-governing local government and as such has been "incorporated" by the state it is in. Each state has different laws defining how a place can be incorporated. An "incorporated place" as recognized by the U.S. Census Bureau can designate a variety of places, such as a city, town, village, borough, and township.

The other type of place defined by the U.S. Census Bureau for statistical purposes are census-designated places. Census-designated places are distinct from incorporated places because they do not have a local government and thus depend on higher government bodies, such as a county, for governance. Census-designated places are defined as being in an unincorporated area. Census-designated places that have a population density of over 10,000 people per square mile are listed in a separate table below. The five boroughs of New York City, and the census-designated places of Puerto Rico and the Northern Mariana Islands that have densities over 10,000, are also listed in separate tables below.





== Incorporated places with a density of over 10,000 people per square mile ==

The following data about the most densely populated incorporated places in the United States is from the U.S. Census Bureau and is from the 2020 U.S. Census, except for the tables on Puerto Rico, which show data from the 2000 US Census.