State officials are scaling back their prediction on how much Nevada will grow over the next 20 years, though they still think the state will add nearly 426,000 more people. The Nevada Department of Taxation released new state growth projections on Tuesday. Clark and Washoe Counties are expected to grow the most from 2015 to 2035. Washoe County is expected to add 84,000 people, while Clark County's population is expected to increase by about 320,000 people. Carson City, Churchill, Douglas, Lyon, and Storey Counties are projected to grow by about 26,000 people combined. Nevada's population was 2.9 million in 2015.