The Census Bureau showed a population increase of 0.98% for the twelve-month period ending in July 2024,[22] slightly below the world estimated annual growth rate of 1.03%.

[28] The U.S. Census Bureau reported in late 2024 that recent immigration to the United States had more than offset the country's lower birth and fertility rates: "Net international migration’s influence on population trends has increased over the last few years.

However, multi-racial Asian Americans make up the fastest-growing subgroup, with a growth rate of 55%, reflecting the increase of mixed-race marriages in the United States.

[50] For non-Hispanic white women, the highest total fertility rate was in Utah, at 2.099, and the lowest in the District of Columbia, at 1.012.

Sources: U.S. Census Bureau, U.S. Department of Commerce, United Nations medium variant projections[56] The dependency ratio is the age-population ratio of people who are normally not in the labor force (the dependent population, which includes those aged 0 to 14 and 65 and older) to those who are (the productive part, ages 15 to 64).

[6] Large urban clusters are spread throughout the eastern half of the United States (particularly the Great Lakes area, northeast, east, and southeast) and the western tier states; mountainous areas, principally the Rocky Mountains and Appalachian chain, deserts in the southwest, the dense boreal forests in the extreme north, and the central prairie states are less densely populated; Alaska's population is concentrated along its southern coast – with particular emphasis on the city of Anchorage – and Hawaii's is centered on the island of Oahu.

According to the U.S. Census Bureau, in 2021, the population of the United States grew at a slower rate than in any other year since the country's founding.

[92] Apart from the previous few years, when population growth plummeted to historically low levels, the slowest pace of increase in the twentieth century occurred between 1918 and 1919, when the influenza epidemic and World War I were both in full swing.

*[94] *Rates are based on provisional counts of marriages by state of occurrence In 2009, Time magazine reported that 40% of births were to unmarried women.

[98] A study by the Agency for Healthcare Research and Quality (AHRQ) found that more than half (51 percent) of live hospital births in 2008 and 2011 were male.

[99] Per U.S. federal government data released in March 2011, births fell 4% from 2007 to 2009, the largest drop in the U.S. for any two-year period since the 1970s.

[108][109]: 3  The drop in the TFR from 2.08 per woman in 2007 to 1.76 in 2017 was mostly due to the declining birth rate of ethnic minorities, teenagers and women in their 30s.

According to the Centers for Disease Control and Prevention (CDC), average American life expectancy at birth was 78.4 years in 2023.

[125]: 1 Starting in 1998, life expectancy in the U.S. fell behind that of other wealthy industrialized countries, and Americans' "health disadvantage" gap has been increasing ever since.

[129] While increases in mortality from unintentional injuries, heart disease, homicide, and diabetes contributed to 11.7%, 5.8%, 2.9%, and 2.8% of the decrease in life expectancy from 2019 to 2020, respectively.

1901–1950 1901–2015 Source: UN World Population Prospects[134] The United States Census Bureau's 2017 projections were produced using the cohort-component method.

In the cohort-component method, the components of population change (fertility, mortality, and net migration) are projected separately for each birth cohort (persons born in a given year).

Of groups Indigenous to the contiguous United States, the largest self-reported tribes are Cherokee (1,449,888), Navajo (434,910), Choctaw (295,373), Blackfeet (288,255), and Sioux (220,739).

Non-Hispanic Whites are projected to no longer make up a majority of the population by 2050, but will remain the largest single ethnic group.

[193] Note: "Minority" refers to people who reported their ethnicity and race as something other than non-Hispanic White alone in the decennial census.

Many Hispanos of New Mexico identify as Spanish/Spaniard) (Not further specified) (Not further specified) (Not further specified) (Not further specified) (Mayan, etc) (Not further specified) All sub-Saharan African origins other those already listed + Ugandan (35,849), Senegalese (31,462), and Zimbabwean (17,991) (No country specified) Not including Kazakh (21,913) or Uzbek (52,304) (Pacific Islander origin without a specified Melanesian, Polynesian, or Micronesian group) (No country specified) (Not further specified) (Including all tribes) (Not further specified) (10,194 additionally reported their ancestry as "Guamanian" alone, and 25,888 reported "Guamanian" alone or in combination) (No country specified) (No country/territory specified) (All Micronesian groups other than Chamorro/Guamanian, Chuukese (12,567), or Marshallese) Religion in the United States (2023)[201] The table below is based mainly on selected data as reported to the United States Census Bureau.

[citation needed][207] According to Pew Research Center study released in 2018, by 2040, Islam will surpass Judaism to become the second largest religion in the US due to higher immigration and birth rates.

[238] A 2011 report by the Williams Institute estimated that nine million adults identify as gay, lesbian, or bisexual, representing 3.5% of the population over 18.

[240] (Older estimates have varied depending on methodology and timing; see Demographics of sexual orientation for a list of studies.)

This demographic includes recent as well as longstanding immigrants; statistically Europeans have resided in the US longer than those from other regions with approximately 66% having arrived prior to 2000.

[246] From fiscal year 1980 until 2017, 55% of refugees came from Asia, 27% from Europe, 13% from Africa, and 4% from Latin America, fleeing war and persecution.

[245] According to the 2010 census, Latin America and the Caribbean is the largest region-of-birth group, accounting for 53% of the foreign born population.

The following table provides a summary of some prominent academic theories on the stratification of American society: The U6 unemployment rate as of April 2017[update] was 8.6 percent.

[269] A definitive recent study of US generational cohorts was done by Schuman and Scott (2012) in which a broad sample of adults of all ages was asked, "What world events are especially important to you?

Pre-war birth rates were defined as anywhere between 1939 and 1941 by demographers such as the Taeuber's, Philip M. Hauser and William Fielding Ogburn.