The U.S. immigrant population—estimated at 40.8 million in 2012 — is the nation’s historical numerical high, and it is also the largest foreign-born population in the world. About 20 percent of all international migrants reside in the United States, even as the country accounts for less than 5 percent of global population. This article presents the latest, most sought-after data on immigrants in the United States—by origin, residence, legal status, deportations, languages spoken, and more—in one easy-to-use resource.

More than 1 million people became lawful permanent residents (LPRs) of the United States in 2012, with family-sponsored immigrants accounting for two-thirds of those gaining a green card. This Spotlight examines federal statistics on foreign nationals who gained LPR status during 2012.

Immigrants from the Middle East and North Africa (MENA) region residing in the United States are part of a migration flow that dates back several decades. The highly diverse MENA immigrant population has grown from about 50,000 in 1920 to nearly 961,000 in 2012. This article examines the latest data on immigrants from the MENA region in the United States, including population size, geographic distribution, admission categories, and demographic and socioeconomic characteristics.

In 2011, there were 25.3 million Limited English Proficient (LEP) individuals residing in the United States, or roughly 9 percent of the nation's population ages 5 and older. Although most LEP individuals were foreign born, nearly one-fifth of this population was native born, about three-quarters of whom were children ages 5 to 17. This article provides a demographic and socioeconomic profile of LEP individuals residing in the United States, including the population's size, geographic distribution, and demographic and socioeconomic characteristics.

Immigrants from South America made up 2.7 million (about 7 percent) of the United States' foreign-born population of 40.4 million in 2011. While the share may seem small, this population has grown 30 times its size since 1960, when about 90,000 South American immigrants resided in the country. This article examines the latest data on South American immigrants in the United States, including population size, geographic distribution, admission categories, and demographic and socioeconomic characteristics.

Over the past five decades, Mexicans have constituted the single largest group of immigrants to the United States originating from Latin America. In 2011, 11.7 million Mexican immigrants resided in the United States, representing 29 percent of the U.S. immigrant population and close to 4 percent of the overall U.S. population. This article examines the latest data on Mexican immigrants in the United States, including population size, geographic distribution, admission categories, and demographic and socioeconomic characteristics.

There were more than 53 million nonimmigrant (temporary) admissions to the United States in 2011. MPI's Qingqing Ji and Jeanne Batalova outline the definition of nonimmigrants and take a detailed look at admissions data and data limitations in this spotlight.

In 2011, the United States granted humanitarian protection to nearly 81,000 immigrants, including some 56,000 refugees and 25,000 asylum seekers. This article takes a detailed look at the most recent refugee and asylum data in the United States – finding that asylum grants in 2011 reversed a downward trend observed since 2007.

The nearly 5 million immigrants age 65 and older residing in the United States in 2010 accounted for 12 percent of all elderly as well as 12 percent of the total immigrant population. MPI's Jeanne Batalova examines the demographic and socioeconomic characteristics of the elderly immigrant population, including where they live, countries of origin, and their sources of income.

Interested in information on annual naturalization trends, illegal immigration, the geographical distribution of immigrants in the United States, current and historical shares, and a host of other topics? MPI's Jeanne Batalova and Alicia Lee have assembled the latest, most interesting data on immigrants and immigration into one easy-to-use resource.

More than 1 million people became legal permanent residents (LPRs) in the United States in 2010. Nearly two-thirds of new LPRs are immigrants with family ties in the United States, report MPI’s Carola Balbuena and Jeanne Batalova in this updated look at the latest statistics on legal immigration.

In 2010, the United States granted humanitarian protection to nearly 95,000 immigrants, including some 73,000 refugees and 21,000 asylum seekers. MPI's Monica Li and Jeanne Batalova take a detailed look at the most recent refugee and asylum data in the United States.

Immigrants from Asia accounted for about 28 percent of the total U.S. foreign-born population in 2009. MPI's Jeanne Batalova examines the social and economic profiles of the foreign born from this region.

While the number of people detained reached a five-year high of over 383,000, apprehensions hit a 34-year low of 613,000 in 2009. MPI's Jeanne Batalova and Kristen McCabe examine the latest immigration enforcement data in this updated Spotlight.

The 1.6 million Chinese immigrants in the United States made them the country's fourth-largest immigrant group in 2008. MPI's Aaron Terrazas and Jeanne Batalova use the latest federal data to explore the population's size, geographic distribution, and socioeconomic characteristics.

The 18.9 million immigrant women in the United States in 2008 made up 12 percent of all women in the country. MPI's Jeanne Batalova examines which countries they come from, their labor force participation, and their socioeconomic status.

There were nearly 40 million temporary admissions to the United States in 2008, more than twice the number in 1990. MPI's Jeanne Batalova outlines the definition of nonimmigrants and takes a detailed look at admissions data and data limitations.

In 2008, the United States raised the ceiling on refugee admission by 10,000, admitted more than 60,000 refugees for resettlement, and granted asylum to nearly 23,000 people. MPI's Jeanne Batalova takes a detailed look at refugee and asylum statistics in the United States.

In 2006, more than 11.5 million Mexican immigrants resided in the United States, accounting for 30.7 percent of all US immigrants. MPI's Jeanne Batalova examines the number of Mexican immigrants in the United States, their socioeconomic characteristics, where they live, and the size of the Mexican-born unauthorized population.

In 2006, about 271,000 foreign born of Pakistani origin were residing in the United States. MPI's Jeanne Batalova and Uriah Ferruccio examine the geographic distribution and socioeconomic characteristics of this population.

In 2006, the U.S. admitted more than 41,000 refugees for resettlement and granted asylum to more than 26,000 people. MPI's Kelly O'Donnell and Jeanne Batalova take a detailed look at refugee and asylum statistics in the United States.

Of the 15.36 million union members in 2006, 12 percent were foreign born. MPI's Chuncui Velma Fan and Jeanne Batalova examine the data on immigrants and labor unions from 1996 to 2006.

In 2005, U.S. immigration officials detained nearly a quarter of a million individuals. MPI's Dawn Konet and Jeanne Batalova look at the most recent data on apprehensions, detentions, and removals.

Latin America and the Caribbean account for the largest percentage of the foreign born in the armed forces. MPI's Laura Barker and Jeanne Batalova report.

The United States' education system has been a major educational destination for foreign students for decades. MPI’s Jeanne Batalova describes the foreign student and exchange visitor population in the United States and highlights recent policy developments affecting them.

The total number of nonimmigrants admitted to the U.S. more than tripled between 1985 and 2005. MPI's Jeanne Batalova outlines the definition of nonimmigrants and takes a detailed look at admissions data.

The number of new immigrant arrivals has remained relatively stable since 1986. MPI’s Jeanne Batalova looks at data on permanent immigration to the U.S..

The U.S. federal government has spread immigration-related responsibilities among six agencies. MPI’s Megan Davy, Deborah Meyers, and Jeanne Batalova explain which agencies handle such tasks as assisting refugees, issuing visas, and handling interior enforcement.

About one in 10 U.S. immigrants is self-employed. MPI’s Jeanne Batalova and David Dixon explore the importance and dimensions of this phenomenon.