A LendingTree study released Tuesday ranks Milwaukee 4th for U.S. cities with the youngest entrepreneurs. According to the report, entrepreneurs who started a business in Milwaukee are on average 37.92 years old. Approximately 51.9% of recent business founders in Milwaukee are Millennials, 32.2% are Gen X, 10.1% are Baby Boomers, 3.5% are from Gen Z and 1.2% are from the Silent Generation.  Milwaukee ranks behind New Orleans, Salt Lake City and Philadelphia, according to the report.