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.

From January to June 2025, the highest number of illegal immigrants that arrived in Spain via land and sea came from Mali, with approximately ***** people. The immigrants from Senegal and Algeria were the second and third most numerous group, with ***** and ***** people leaving their country of residence, respectively. More than ****** illegal immigrants reached the Iberian country in 2024. A risky journey Spain, together with Italy and Greece, are the main points of entry to Europe for illegal migration. Most arrivals happen through the Mediterranean Sea, which is a very dangerous journey for migrants. While active since 2006, the migration route from the coasts of West Africa to the Canary Islands (the closest territory of the European Union) has become particularly popular in recent years, even though so many people lost their lives their. Undocumented minors Among those reaching the Spanish territory are undocumented and unaccompanied minors, known in Spanish as "menas” (Menores Extranjeros No Acompañados). In 2018, the number of unaccompanied and separated children that arrived by sea exceeded *****, which represented the largest figure since at least 2014. This number decreased by approximately ***** cases in 2020. Nearly half of them came from Morocco, separated from Spain by merely ** kilometres of water at the Gibraltar Strait's narrowest point.

In 2022, the greatest number of illegal aliens apprehended in the United States were from Mexico, with ******* illegal aliens apprehended. Guatemala, Cuba, Honduras, and Venezuela rounded out the top five in that year.

In 2022, the greatest number of illegal aliens returned in the United States were from the Philippines, with ****** illegal aliens returned. India, Canada, China, and Russia rounded out the top five in that year.

In 2024, there were approximately 239,159 illegal border crossings made at borders of the European Union, with Syrian's being the most common nationality, at 44,237.

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.

From January to September 2020, the highest share of irregular migrants that arrived to Spain via land and sea came from Algeria with almost 40 percent of the total cases. Morocco and Mali followed second and third with 20.3 and 12.6 percent, respectively.

The estimated population of unauthorized immigrants in the U.S. stands at around ** million people. Although the number has stabilized, the United States has seen a spike in migrant encounters in the last few years, with over * million cases registered by the U.S. Border Patrol in 2023. This is a slight decrease from the previous year, when there were over *** 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.

Over 145,000 Venezuelans crossed illegally into Mexico in 2023. This year, Venezuela led the statistics of irregular migrants entering Mexico, followed by Honduras and Guatemala. Mexico is a well-known route for illegal immigration into the United States. Most of those migrants try to cross the board with the US.

This statistic shows the distribution of undocumented immigrants in South Korea in 2018, divided by county of origin. In that year, around ** percent of caught undocumented immigrants were from Thailand, while approximately ** percent came from China.

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.

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

This statistic shows the number of undocumented immigrants caught in South Korea in 2018, broken down by country of origin. In that year, more than *** thousand undocumented immigrants from Thailand and more than ** thousand immigrants from China were caught. In total, around *** thousand illegal immigrants were caught.

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 2022, the largest group of immigrants arriving in Norway came from Ukraine after the Russian invasion of the country in February that year. Moreover, the origin of nearly 17,000 immigrants was unknown. Immigrants from Poland made up the third largest group. At the beginning of 2023, a total of nearly 112,000 Polish people resided in Norway.

With nearly 49,000 living in Denmark as of January 1, 2024, most immigrants were from Poland. The second and third largest groups of immigrants were from Ukraine and Romania, amounting to roughly 41,000 and 40,000 people, respectively. Tightening immigration policies Like many European countries, Denmark experienced a heightened influx of immigrants in 2015. In the wake of the refugee situation, however, the number of immigrants, notably asylum seekers, declined in part due to sharpened immigration policies. In 2015, over 21,000 refugees applied for asylum in Denmark, whereas applications fell below 5,000 in 2022. Residence permits Among the different types of residence permits, permits granted based on asylum were the least delivered type of permit. Only 1,400 people were granted asylum in Denmark in 2022. The highest number of asylum seekers came from Ukraine, even when excluding Ukrainians arriving via the temporary protection act. In 2022, Denmark registered around 2,000 applications from Ukrainians.

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.

Between the third quarter of 2017 and the end of 2023, the largest share of Canada's refugee applications came from people from Haiti. Among these, 3,376 had been accepted, and 5,664 had been rejected. The remaining countries with the largest share of applications were fairly spread out across the globe, although the majority of applications are believed to have come from those fleeing persecution or seeking asylum.

The majority of immigrants in Poland in 2023 were from Ukraine (******), a decrease of ** percent compared to the previous year. Immigration to Poland for different reasons In 2022, nearly ****** people immigrated to Poland for permanent residence, of which most came from Ukraine, the UK, and Germany, respectively. Furthermore, the majority of immigrants for temporary stay in Poland in 2022 were from Ukraine (****** immigrants), a decrease of *** percent compared to the previous year. In 2023, most Ukrainian citizens chose Poland as a place for economic emigration. The main reason for that choice was geographical and cultural proximity. Nearly every second respondent valued the low language barrier, and for every third person, the motivation was earnings. Poles attitudes toward Russia’s war with Ukraine In 2022, most Poles had a negative attitude toward Russia’s invasion of Ukraine. Poles’ biggest concerns about the Russia-Ukraine war were the military threats from Russia and the impact of the war on the condition of the Polish economy. After the Russian invasion of Ukraine in February 2022, Poles proved their support for Ukrainians. One of the most common forms of support for refugees fleeing the Russia-Ukraine war to Poland was to provide blankets, food, and hygiene items. Four out of 10 Poles donated money to a charity fundraiser and volunteered in organizations.

In the United States, around ****** illegal persons from Asia were returned in 2021, the highest of any region of origin. Illegal persons coming from elsewhere in North America made up the second highest with ****** returns.