Clark County added 2nd most new residents in 2017. Clark County added more new residents last year than almost any other county in the nation, Nevada’s most populous county grew by 47,355 residents in 2017. The Census Bureau pegged Clark County’s population at 2,204,079 as of July 1, up 2.2 percent from the July 1, 2016 estimate of 2,156,724.
