In 2019, California had the highest population of unauthorized immigrants, at around 2.74 million. The overall figure for the United States was estimated to be around 11.05 million unauthorized immigrants.

As of 2023, 27.3 percent of California's population were born in a country other than the United States. New Jersey, New York, Florida, and Nevada rounded out the top five states with the largest population of foreign born residents in that year. For the country as a whole, 14.3 percent of residents were foreign born.

This statistic shows the top ten metropolitan areas in the United States with highest unauthorized immigrant populations in 2014. With over one million unauthorized people, New York-Newark-Jersey City, NY-NJ-PA had the highest illegal immigrant population in the United States in 2014.

As of January 2022, it was estimated that about 4.81 million illegal immigrants from Mexico were living in the United States. It was also estimated that 750,000 illegal immigrants from Guatemala were living in the United States.

The estimated population of unauthorized immigrants in the U.S. stands at around 11 million people. Although the number has stabilized, the United States has seen a spike in migrant encounters in the last few years, with over two million cases registered by the U.S. Border Patrol in 2023. This is a slight decrease from the previous year, when there were over 2.2 million cases registered. Due to its proximity and shared border, Mexico remains the leading country of origin for most undocumented immigrants in the U.S., with California and Texas being home to the majority.

Immigration and political division

Despite the majority of the population having immigrant roots, the topic of immigration in the U.S. remains one of the country’s longest-standing political debates. Support among Republicans for restrictive immigration has grown alongside Democratic support for open immigration. This growing divide has deepened the polarization between the two major political parties, stifling constructive dialogue and impeding meaningful reform efforts and as a result, has led to dissatisfaction from all sides. In addition to general immigration policy, feelings toward illegal immigration in the U.S. also vary widely. For some, it's seen as a significant threat to national security, cultural identity, and economic stability. This perspective often aligns with support for stringent measures like Trump's proposed border wall and increased enforcement efforts. On the other hand, there are those who are more sympathetic toward undocumented immigrants, as demonstrated by support for the Deferred Action for Childhood Arrivals (DACA) program.

In 2022, an estimated 10.99 million unauthorized immigrants were living in the United States. This is an increase from about 3.5 million unauthorized immigrants who lived in the United States in 1990.

In January 2022, it was estimated that about 1.85 million male illegal immigrants living in the United States were aged between 35 and 44 years old. In that same year, it was estimated that 1.52 million female illegal immigrants living in the U.S. were between 35 and 44 years old.

Abstract (en): Transatlantic Trends: Immigration, 2009 examined attitudes and policy preferences related to immigration in Europe, Canada, and the United States. The survey concentrated on issues such as: general perceptions of immigration and immigrants, perceptions of legal and illegal immigrants, the impact of immigration on society, admittance of immigrants, immigration policies, immigration and integration, decision-making level, socio-political rights, welfare, government evaluation and number of immigrants, interaction with immigrants, and economic crisis. In addition, a list experiment was implemented in this survey. Several questions were also asked pertaining to voting and politics including vote intention, political party attachment, whether candidate parties' agendas on immigration will influence their vote, and left-right political self-placement. Demographic and other background information includes age, gender, ethnicity, citizenship, origin of birth (personal and parental), religious affiliation, age when stopped full-time education and stage at which full-time education was completed, occupation, type of locality, region of residence, and language of interview. Please refer to the "Technical Note" in the ICPSR codebook for further information about weighting. ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection: Created online analysis version with question text.; Checked for undocumented or out-of-range codes.. Response Rates: The total response rate for all countries surveyed is 13 percent. Please refer to the "Technical Note" in the ICPSR codebook for additional information about response rate. The adult population aged 18 years and over, with access to a landline telephone in eight countries: Canada, France, Germany, Great Britain, Italy, the Netherlands, Spain, and the United States. Smallest Geographic Unit: country (1) Stratified multi-stage random sampling (3 steps selection) was implemented. Sampling points were selected according to region and urbanization, and then random routes were conducted within these sampling points. (2) Random-digit dialing was implemented in all countries. Up to eight callbacks were used for each telephone number. The closest birthday rule was used to randomly select respondents within a household. computer-assisted telephone interview (CATI)The original data collection was carried out by TNS Opinion and Social -- Brussels, on request of the German Marshall Fund of the United States.The documentation and/or setup files may contain references to Poland, but Poland was not a participant in this Transatlantic Trends: Immigration survey. This collection contains no data for Poland.A split ballot was used for questions Q6, Q8, Q15, Q19, and Q25 in this survey. The variables Q6_SPLIT, Q8_SPLIT, Q15_SPLIT, Q19_SPLIT, and Q25_SPLIT define the separate groups for each of these questions. Additional information on the Transatlantic Trends Survey is provided on the Transatlantic Trends Web site.

In 2022, about 2.58 million illegal aliens were apprehended in the United States. This was a significant increase from the previous year, when there were around 1.87 million illegal aliens apprehended nationwide. Apprehensions refer to Border Patrol apprehensions and ICE administrative arrests.

This statistic shows the estimated percentage of employed undocumented immigrants in the United States in 2016, distinguished by industry. In 2017, around 14.2 percent of agriculture workers were estimated to be undocumented immigrants.

The largest number of immigrants in Germany were from Ukraine, as of 2023. The top three origin countries were rounded up by Romania and Turkey. Immigrants are defined as having left a country, which may be their home country, to permanently reside in another. Upon arriving, immigrants do not hold the citizenship of the country they move to. Immigration in the EU All three aforementioned countries are members of the European Union, which means their citizens have freedom of movement between EU member states. In practice, this means that citizens of any EU member country may relocate between them to live and work there. Unrestricted by visas or residence permits, the search for university courses, jobs, retirement options, and places to live seems to be defined by an enormous amount of choice. However, even in this freedom of movement scheme, immigration may be hampered by bureaucratic hurdles or financial challenges. Prosperity with a question mark While Germany continues to be an attractive destination for foreigners both in and outside the European Union, as well as asylum applicants, it remains to be seen how current events might influence these patterns, whether the number of immigrants arriving from certain countries will shift. Europe’s largest economy is suffering. Climbing inflation levels in the last few months, as well as remaining difficulties from the ongoing coronavirus (COVID-19) pandemic are affecting global economic development. Ultimately, future immigrants may face the fact of moving from one struggling economy to another.

In the fiscal year of 2020, the United States Border Patrol apprehended 400,651 people trying to cross the Southwest border. This was a significant decrease from the previous year, when there were 851,508 apprehensions by Border Patrol at the Southwest border. This decrease is likely due to the impact of the coronavirus (COVID-19) pandemic.

In 2023, around 1.93 million people immigrated to Germany. Numbers fluctuated during the time period covered in the graph at hand, peaking in 2015 during the high point of Europe’s refugee crisis. Significantly lower figures in 2020 may be attributed to the first year of the coronavirus (COVID-19) pandemic, and subsequent restrictions implemented by the German government on entering the country, in order to control the spread of the disease. Immigration to Germany “Immigrant” is a term used from the point of view of the receiving country, or the country being migrated to by a person. While reasons for and circumstances leading to an immigrant entering a foreign country may vary, they often include love, include seeking residence, employment, family reunions, or applying for asylum. Various countries are represented among foreigners living in Germany, though currently the leading three by numbers are Turkey, Ukraine, and Syria. Around 5.2 million immigrants living in Germany do not need a residence permit due to having EU citizenship, and therefore being allowed freedom of movement based on EU law. Another 2.64 million immigrants were granted an unlimited permit to stay in Germany. The near future Germany remains a popular choice for immigrants, even in currently challenging economic and political times. Welfare benefits, healthcare, and various support initiatives for those moving to or arriving in the country are on the list of selling points, though in practice, difficulties may be encountered depending on individual situations and laws in different German federal states. While the unemployment rate among foreigners living in Germany had gone up in 2020, it dropped again in the following years, but increased once more in 2023 and 2024 to over 16 percent. The country is Europe’s largest economy, housing many global players in various industries, which continues to attract jobseekers, despite these very industries facing struggles of their own brought on both by the ongoing coronavirus pandemic and geopolitical events in Europe.

In the nineteenth and twentieth centuries, the majority of documented migration to the United States of American came from European countries. Between 1820 and 1957, of the approximate 41 million migrants to the US, over 34 million of these came from Europe. The most commonly documented countries of origin during this time were Germany (6.6 million), Italy (4.9 million), Ireland (4.6 million), Great Britain (4.5 million), and Russia (3.4 million). The first wave of mass migration came in the 1850s, as the Great famine crippled Ireland's population, and many in rural areas of mainland Europe struggled to adapt to industrialization, and economic opportunities attracted many in the 1870s, following the American Civil War. The 1880s saw another wave, as steam powered ships and lower fares made trans-Atlantic journeys much more affordable. The first wave of mass migration from Eastern and Southern Europe also arrived at this time, as industrialization and agricultural advancements led to high unemployment in these regions.

The majority of migrants to the United States settled in major urban centers, which allowed the expansion of industry, leading to the United States' emergence as one of the leading global economies at the turn of the twentieth century. The largest wave of migration to the United states during this period came in the first fifteen years of the 1900s. The influx of migrants from Northern and Western Europe had now been replaced by an influx from Eastern and Southern Europe (although migration from the British Isles was still quite high during this time). European migration fell to it's lowest levels in eighty years during the First World War, before fluctuating again in the interwar period, due to the Great Depression. As the twentieth century progressed, the continent with the highest levels of migration to the US gradually changed from Europe to Latin America, as economic opportunities in Western Europe improved, and the US' relationship with the Soviet Union and other Eastern, communist states became complicated.

For the year ending June 2024, approximately 1.2 million people migrated to the United Kingdom, while 479,000 people migrated from the UK, resulting in a net migration figure of 728,000. There have consistently been more people migrating to the United Kingdom than leaving it since 1993 when the net migration figure was negative 1,000. Although migration from the European Union has declined since the Brexit vote of 2016, migration from non-EU countries accelerated rapidly from 2021 onwards. In the year to June 2023, 968,000 people from non-EU countries migrated to the UK, compared with 129,000 from EU member states. Immigration and the next UK election Throughout 2023, immigration, along with the economy and healthcare, was consistently seen by UK voters as one of the top issues facing the country. Despite a pledge to deter irregular migration via small boats, and controversial plans to send asylum applicants to Rwanda while their claims are being processed, the current government is losing the trust of the public on this issue. As of February 2024, 20 percent of Britons thought the Labour Party would be the best party to handle immigration, compared with 16 percent who thought the Conservatives would handle it better. With the next UK election expected at some point in 2024, the Conservatives are battling to improve their public image on this and many other issues. Historical context of migration The first humans who arrived in the British Isles, were followed by acts of conquest and settlement from Romans, Anglo-Saxons, Danes, and Normans. In the early modern period, there were also significant waves of migration from people fleeing religious or political persecution, such as the French Huguenots. More recently, large numbers of people also left Britain. Between 1820 and 1957, for example, around 4.5 million people migrated from Britain to America. After World War Two, immigration from Britain's colonies and former colonies was encouraged to meet labor demands. A key group that migrated from the Caribbean between the late 1940s and early 1970s became known as the Windrush generation, named after one of the ships that brought the arrivals to Britain.

In July 2024, the United States accepted 34 refugees from Ukraine. In fiscal year 2022 - which ended September 30, 2022 - the U.S. accepted a total of 1,610 Ukrainian refugees. The most Ukrainian refugees arrived in February 2022, the same month that Ukraine was invaded by Russia.In April 2022, the United States committed itself to welcoming 100,000 Ukrainian citizens and others fleeing Russian aggression in the region, but has so far only accepted 2,402 since the Russian invasion in February last year.

The United States of America was the largest source of foreign tourists arriving to India in 2022 at over 1,373 thousand visitors. American tourists have been outnumbering the tourists that visit the country from other European and South Asian countries in 2022. In 2022, citizens from Bangladesh, the United States of America, and the United Kingdom had the highest number of tourists visiting India. Sliding foreign revenue   According to the data, most Bangladeshi tourists visited India for leisure travel. Moreover, leisure spending was also the highest contributor to the foreign tourism revenue for India. However, the growth in foreign exchange earnings was the slowest this decade, with just over 4.7 percent in 2018. Borders dictating tourism
Bangladesh and India share the fifth-longest land border in the world. This might also explain the high tourism influx from Bangladesh to India. Although from the point of view of the Indian government, there seems to be a thin line between tourism and illegal immigration. Managing the complex Indo-Bangladeshi border running through five Indian states is a herculean task, which needs constant monitoring. Risks of cross-border infiltration, illegal migration and smuggling remain major national security challenges for India.

In 2020, cumulative South African emigrants amounted to roughly 915,000. The vast majority settled in the United Kingdom (around 247,000), followed by Australia (nearly 200,000). Together, the two countries constituted roughly 49 percent of the total South African migrants living abroad. Moreover, the third major country of destination for South Africans was the United States, with about 117,000 people living there. Overall, the 21 countries presented covered 94.4 percent of all South African migrants.

Language: a primary driver of emigration destinations

Language is a factor that helps ease communication and integration for individuals within a new society. Noticeably, the five leading destinations for South African emigrants had English as an official language. In South Africa, English was the second most spoken language outside households. Furthermore, the Netherlands ranked seventh, which language can also justify. Afrikaans, a language developed from 17th-century Dutch, was the third most spoken language among households in South Africa.

Unemployment a major worry and prevalent among youth    

A real worry for South Africans in 2022 was unemployment. As of April 2022, 64 percent of the respondents of a survey reported concern regarding the job market and the unemployment situation in the country. As of the first quarter of 2022, the unemployment rate among the age groups 15-24 years and 25-34 years was significantly higher than the rest, reaching 63.9 percent and 42.1 percent, respectively.