The manufacturing renaissance is bringing jobs back from overseas--and settling them in some new production hubs. There were 12.2 million U.S. manufacturing workers in 2014, down from prerecession levels but up from the 11.8 million of five years ago, according to the Bureau of Labor Statistics. Companies "have recognized that there are costs associated with offshoring your manufacturing," including less control over product quality and intellectual property, says Harvard Business School professor Willy Shih. And "making stuff is now a high-tech, software-saturated activity," says Mark Muro of the Brookings Institution. These six cities, in ascending order of five-year growth, are some of the country's surprising new manufacturing centers.