A new analysis of monthly Census Bureau data by the Center for Immigration Studies shows that the na- tion’s immigrant population (legal and illegal) hit a record high of 42.1 million in the second quarter of this year — an increase of 1.7 million since the same quarter of 2014. Growth in the immigrant popula- tion in the last year was led by a 740,000 increase in the number of Mexican immigrants. After falling or growing little in recent years, the number of Mexican immigrants again seems to be growing significantly. The monthly Census Bureau data, referred to as the Current Population Survey (CPS), is released before other data. As more information becomes available, it should confirm the findings from the CPS.1
Among the findings:
• The nation’s immigrant (foreign-born) population, which includes legal and illegal immigrants, grew by 4.1 million from the second quarter of 2011 to the second quarter of 2015 — 1.7 million in just the last year.
• Immigrants are 13.3 percent of the nation’s total population — the largest share in 105 years.
• Growth in the last year was led by a rebound in the number of Mexican immigrants, which increased by 740,000 from 2014 to 2015 — accounting for 44 percent of the increase in the total immigrant population in the last year.
• The total Mexican immigrant population (legal and illegal) reached 12.1 million in the second quarter of 2015 — the highest quarterly total ever.
• Prior research has indicated that net migration (the number coming vs. leaving) from Mexico had fallen to zero; the recent growth indicates that the period of zero net migration has ended.
• In addition to Mexico, growth in the immigrant population was led by a 449,000 increase in the last year from countries in Latin America other than Mexico.
• The Department of Homeland Security and other researchers have estimated that eight in 10 illegal im- migrants are from Mexico and Latin America, so the increase in immigrants from these countries is an indication that illegal immigration has begun growing again.
• The number of immigrants in the United States is now enormous, but it must be recognized that most immigrants, including those from Latin America, are in the country legally. Absent a change in legal im- migration policy, the immigrant population will continue to increase.
More HERE. [1]

Steven A. Camarota is the director of research and Karen Zeigler is a demographer at the Center for Immigration Studies.
1629 K Street, NW, Suite 600, Washington, DC 20006 • Phone 202.466.8185 • Fax 202.466.8076 • www.cis.org