New Jersey saw the largest jump in undocumented immigrants from 2009 to 2012 of any other state in the US.

New Jersey saw the largest jump in undocumented immigrants from 2009 to 2012 of any other state in the US, according to a study released yesterday by the Pew Research Center.

Ecuadorean immigrants were among the largest group of new, undocumented Latin American immigrants to the Garden State.

New Jersey (+75,000), Florida (+50,000) and Pennsylvania (+30,000) were among seven states in the US to register gains in unauthorized immigrants from 2009 to 2012 even as the total number of US immigrants was unchanged at 11.2 million.

Other states with increases in the number of undocumented residents were Maryland, Virginia, Idaho and Nebraska.

Mexicans still make up a slight majority of undocumented immigrants more and more immigrants from the Dominican Republic, Honduras, and India. Other Central American, Caribbean and Asian nations are also contributing US residents to the US foreign-born population.

In the US, six states alone account for 60% of unauthorized immigrants—California, Texas, Florida, New York, New Jersey and Illinois. But the distribution of the population is changing. From 2009 to 2012, several East Coast states were among those with population increases, whereas several Western states were among those with population decreases. There were seven states overall in which the unauthorized immigrant population increased: Florida, Idaho, Maryland, Nebraska, New Jersey, Pennsylvania and Virginia. Meanwhile, there were 14 states in which the population decreased over the same time period: Alabama, Arizona, California, Colorado, Georgia, Illinois, Indiana, Kansas, Kentucky, Massachusetts, Nevada, New Mexico, New York and Oregon. Despite a decline, Nevada has the nation’s largest share (8%) of unauthorized immigrants in its state population.

Unauthorized immigrants make up 5.1% of the U.S. labor force, according to a study released yesterday by Pew Research Center. In the U.S. labor force, there were 8.1 million unauthorized immigrants either working or looking for work in 2012. Among the states, Nevada (10%), California (9%), Texas (9%) and New Jersey (8%) had the highest shares of unauthorized immigrants in their labor forces.

About 7% of K-12 students had at least one unauthorized immigrant parent in 2012. Among these students, about eight-in-ten (79%) were born in the U.S. In Nevada, almost one-in-five students (18%) have at least one unauthorized immigrant parent, the largest share in the nation. Other top states on this measure are California (13%), Texas (13%) and Arizona (11%).

The Census calculates the number of undocumented immigrants by subtracting the estimated legal immigrant population from the total foreign-born population.