For a report released this week, the Georgetown University Center on Education and the Workforce analyzed job postings on 15,000 websites to see where jobs were most plentiful. Massachusetts, Delaware, and Washington produced the most job ads per college-educated worker, while West Virginia, Rhode Island, and South Carolina produced the fewest. “If you look at college degrees on average, the numbers on the payoff [for a degree] are very positive and powerful,” says Anthony Carnevale, director of the center and one of the report’s authors. But the return on investment for a college degree “really depends on not just your major, but also what part of the country you’re in.”