Las Vegas, NV
– Population change: 608,494 increase (+2,492%)
– 2016 population: 632,912
– 1950 population: 24,418
Although the city was founded in 1905, Las Vegas didn’t see its biggest population spike until the 1980s. Sin City nearly doubled its total number of inhabitants from 1985 to 1995 as increased gambling, tourism, and casino construction brought thousands of jobs to the city.