Ranked as the healthiest, wealthiest and one of the fastest growing in Tennessee, Williamson County is a hot spot for business. We are becoming globally recognized for our success in attracting corporate headquarters, health care and high tech. In the past five years, five companies with over $100 million in revenue have relocated their headquarters to Williamson County. In addition, there are more than 195 health care related businesses located here. Williamson County is the only county in Tennessee to have a Aaa bond rating by Moody's Investor Services.