 The hope is that the upgrades will allow for more families to be served. And TKK has been named the 10th wealthiest city in South Carolina. The list done by Forbes ranked the top 50 cities and was based on a number of factors. They included median household income, mean household income, median home value, and property taxes paid. With TKK at 10, Fort Mill came in at 15. Also making the list was Lake Wiley at number 23. Number 1 and number 2 went to Kiowa and Sullivans, respectively.