The last time that Illinois increased its minimum wage was in July 2010. A total of 13 states now have minimum wages of $10 per hour or higher, and four have enacted legislation to gradually raise the minimum wage to $15 per hour. Recent research shows that raising the minimum wage boosts worker incomes while having little to no effect on employment, business growth, and consumer prices. In this report, the Project for Middle Class Renewal (PMCR) at the University of Illinois at Urbana-Champaign and the Illinois Economic Policy Institute (ILEPI) evaluates the regional impacts of a statewide $15 minimum wage. A $15 minimum wage would directly affect more than 1.4 million adult workers in Illinois. Of these individuals, 57 percent are women, 44 percent are African American workers and Latino and Latina workers, 89 percent are U.S. citizens, and 56 percent are workers age 30 or older. A $15 minimum wage would have the largest impact on low-income workers in communities outside of the Chicago metro area. While the policy change would raise incomes by about $5,000 for directly affected workers in the Chicago area, it would increase earnings for low-wage workers by over $8,000 in the Springfield and Bloomington-Normal areas, over $7,000 in the Rockford and Champaign-Urbana regions, and more than $6,000 in the Illinois communities around St. Louis.