WASHINGTON, DC — America’s most visited national parks drew nearly 50 million people in 2025, according to a ranking that compared the top 10 using wildlife, trail mileage, park size, age, UNESCO status and Google review scores.
The list does not claim a single definitive best park, but it places Yellowstone first and Zion last among the country’s busiest destinations.
Yellowstone, Yosemite and Grand Canyon lead the busiest parks
Yellowstone National Park ranked first, with nearly 4.8 million visitors in 2025. The article points to its geothermal activity, more than 10,000 hydrothermal features and over 1,100 miles of trails spread across 2.2 million acres.
Yosemite followed with more than 4.2 million visitors, helped by landmarks including El Capitan, Yosemite Falls and Half Dome. Grand Canyon National Park came next with 4.4 million visitors, ranking high for scale, bird life and major overlooks such as Toroweap and the Rim Trail.
Eastern and western parks each drew huge crowds in 2025
Great Smoky Mountains National Park was the most visited park on the list, with 11,527,939 arrivals, and it remains free to enter. The park spans Tennessee and North Carolina and is known for Cades Cove, Alum Cave Trail and synchronous fireflies near Elkmont.
Other high-traffic parks included Zion with nearly 5 million visitors, Glacier with over 3.1 million, Olympic with 3.5 million, Rocky Mountain with its extensive trail system and Grand Teton with 3.8 million visitors.
Why the ranking favors more than visitor counts
The article says the order was not based only on popularity. It also weighed factors such as park age, UNESCO recognition, trail access and wildlife numbers, which helped elevate Yellowstone, Yosemite and Grand Canyon above parks with similar crowd totals.
Several parks were highlighted for their signature features, including Acadia’s Cadillac Mountain sunrise, Olympic’s Hoh Rain Forest, Rocky Mountain’s Trail Ridge Road and Zion’s Narrows and Angel’s Landing.
Crowds, access rules and seasonal timing shape the experience
Some parks now manage heavy demand with reservations or permits. Acadia requires advance vehicle reservations for Cadillac Mountain during peak season, while Zion’s Angel’s Landing needs a lottery permit and the park warns that river conditions in The Narrows can change fast.
The article also notes that timing matters. Yellowstone and Glacier are busiest in summer, Great Smoky Mountains draws crowds year-round, and Acadia’s foliage is strongest in mid to late October. For many of the parks, visiting outside peak months can mean fewer people and easier access.
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