It is estimated to have reached the 200 million mark in 1967, and the 300 million mark on October 17, 2006. population almost quadrupled during the 20th century – at a growth rate of about 1.3% a year – from about 76 million in 1900 to 281 million in 2000. The total fertility rate in the United States estimated for 2022 is 1.665 children per woman, which is below the replacement fertility rate of approximately 2.1.
The Census Bureau showed a population increase of 0.4% for the twelve-month period ending in July 2022, below the world average annual rate of 0.9%. The United States is the third most populous country in the world. Virgin Islands, American Samoa, and the Northern Mariana Islands) as well as several minor island possessions. territories ( Puerto Rico, Guam, the U.S. This figure includes the 50 states and the District of Columbia but excludes the population of five unincorporated U.S. The United States had an official estimated resident population of 334,914,895 on July 1, 2023, according to the U.S. (primary language at home) English 78.5%.Samoan is an official language in American Samoa, Chamorro is an official language in Guam, Chamorro and Carolinian are official languages in the Northern Mariana Islands, and Spanish is an official language in Puerto Rico. Hawaiian is official in Hawaii, 20 Native languages are official in Alaska, and Sioux is official in South Dakota. English is designated official in 32 of 50 states (and in all 5 U.S. Geiger, Summer 2020, and modified Summer 2022.Population pyramid of the United States as of July 1, 2022 Interactive functionality: Esri's ArcGIS API for JavaScript.Philadelphia, however, does have the largest number of census tracts in Pennsylvania. Keep in mind that Delaware County is adjacent to Philadelphia, and Philadelphia County is the only county with no municipalities (the city is both a municipality and a county). These are the top three areas in each geographical category along with their population densities all numbers are expressed as the number of people per square mile. In some cases family size can be cultural, differentiating those that value large numbers of children or multi-generational families from those with other priorities. Areas with higher median ages will have smaller numbers of members of households, and areas with larger numbers of children in most families will have much lower median ages. Family size can reflect the ages of members of the household. Homes with larger numbers of occupants will, of course, increase population density, and vice versa. And finally townships are mostly rural, except when they are immediately adjacent to cities and boroughs.Īnother example that demonstrates how population density shows how people live is how it reflects family size. Boroughs represent an urban development usually smaller than cities (but no less densely populated, as the table below shows). As noted above, cities generally have the largest relative populations in their counties and likewise, the largest population densities. Rural living, whether on farms or in forested landscapes or even desert areas, feature the maximum distances between dwellings.Ī similar, but not identical, distinction that describes where people live is the difference between the three types of municipalities in Pennsylvania: cities, boroughs and townships. The key attraction for those leaving cities and smaller towns for suburban housing developments starting in the 1950s was the separation between dwelling units while keeping the neighborhood-based lifestyle. So do city blocks of row homes with small to non-existant backyards. Taller residential buildings that are more likely to be found in larger cities reduce that distance tremendously. Census tracts are of widely varying sizes because they contain relatively consistent populations.įor one example of its ability to describe where people live, population density measures the relative ground distance between people's residences. An example of the latter are "census tracts," devised by the US Bureau of the Census decades ago to provide an effective framework for the redistricting of US House of Representatives every 10 years and adapted for many other uses since then.
Population density is calculated by first defining an area, whether it is outlined by political boundaries or by boundaries defined for other reasons. It can be used as a factor to try to explain a wide range of other population measures, such as income, politics and access to healthcare. It can be used to differentiate urban vs. Population density is a measure that combines several facts about where and how people live.