The population densities listed in the table below do not work out to be exactly the result of dividing the listed population by the listed land area because the land areas have been rounded off to two decimal places, but the population densities were calculated before rounding the land area figures. The population density is calculated by dividing the population by the land area so that it represents the number of people living in one square mile of land area. Census Bureau of all places with at least 50,000 population, arranged alphabetically by state, and ranked by total population the population density for each place is also given in the lists. The following ranking is made up of incorporated places of any population, but also of interest may be lists compiled by the U.S. Census, except for the tables on Puerto Rico, which show data from the 2000 US Census. The following data about the most densely populated incorporated places in the United States is from the U.S. Incorporated places with a density of over 10,000 people per square mile 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.

Census-designated places that have a population density of over 10,000 people per square mile are listed in a separate table below. Census-designated places are defined as being in an unincorporated area. 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 Bureau for statistical purposes are census-designated places. The other type of place defined by the U.S. Census Bureau can designate a variety of places, such as a city, town, village, borough, and township. An 'incorporated place' as recognized by the U.S. Each state has different laws defining how a place can be incorporated. 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. The following is a list of incorporated places in the United States with a population density of over 10,000 people per square mile.

3d us population density map