Despite ongoing efforts to manage congestion fueled by Front Range population growth, Rocky Mountain National Park saw a record number of visitors last year. The 104-year-old park drew 4,590,492 visitors in 2018, a 3.5 percent increase over 2017. The National Park Service’s annual ranking of the top 10 national parks has been delayed by the partial government shutdown, but Rocky Mountain National Park was ranked fourth in 2017, slightly ahead of Yosemite National Park and slightly behind Zion National Park. Rocky Mountain National Park has seen explosive growth in its numbers since 2012.