Arizona had a higher share of illegal immigrants than any other state, says a report from the Public Policy Institute of California

The institute estimates that in 2006, 8.3% of Arizona's population consisted of illegal migrants, followed by California with 7.8%; Texas, 7.1%; and Florida, 5.5%. About 3.9% of the country's population, or 11.5 million people, were illegal immigrants, the group estimates. California had the highest number of illegal immigrants, with 2.8 million, while Arizona had an estimated 500,000.