Top 100 rank: 18
Population: 52,700
South Jordan is one of the fastest-growing cities in Utah. Daybreak, a planned community, has drawn more residents to the area than any other new home community in the state. Locals take health seriously: When they’re not skiing or off-road biking in nearby mountains, residents take to the trails at Jordan River Parkway for jogging, horseback riding, fishing, and more. As with many parts of Utah, the area lacks diversity. But it also boasts the lowest divorce rate on our list: around 4%. –L.G.