The distribution of immigrants varies widely across the states. California had the most noncitizens, about one quarter (25 percent) of its caseload. Indeed, the 1.3 million immigrants on Medicaid in that state were more than half of the national total of Medicaid immigrants. Table ES-3
summarizes combined data for the ten states with the highest number of immigrants: California, New York, Texas, Florida, Illinois, Massachusetts, Washington, New Jersey, Arizona and Pennsylvania. Immigrants are highly concentrated: these 10 states include 91 percent of the nation's total number of Medicaid immigrants and account for 90 percent of the nation's expenditures for immigrants. In 21 states, less than 1 percent of the Medicaid enrollees were immigrants.