Park Strain Index 2026
Outforia ranked all 63 U.S. national parks by visitor growth, current visitor load, and 2026 reservation changes. Glacier ranks first, and four of the top 10 dropped crowd controls for 2026.
More than 3.1 million annual visits, 33% growth over the past decade, and a removed 2026 reservation system.
Glacier, Mount Rainier, Yosemite, and Arches enter 2026 with fewer crowd controls.
Use the full table to find local parks, compare scores, and sort by growth or visitor load.
The main finding
The index measures strain as visitor-management pressure entering 2026. A high score can come from fast growth, heavy annual visitation, a reservation rollback, or a mix of the three. That is why the ranking differs from a straight list of the busiest parks.
2026 access shift
Glacier, Mount Rainier, Yosemite, and Arches all rank in the top 10. Each enters 2026 after removing a reservation system used to manage peak-season demand.
The ranking
Each card names the main driver behind the score, then keeps the full breakdown in the explorer below.
Explore all 63
Search, filter, and sort the full dataset. Open “Why it ranks” for the plain-English reason behind each score.
| Rank | Park | Score | Visits | Growth | Status | Why it ranks |
|---|
For visitors
Use the ranking as an early warning, especially for parks with dropped or modified reservation systems. Check current park alerts before booking, look for shuttle or timed-entry updates, and build in extra time around peak entrances.
System-wide context
Across the park system, visits are higher than in 2001. Permanent staffing fell sharply in 2025, which makes crowd-management tools more important.
Staffing context
Roads, trails, emergency calls, permits, repairs, and visitor services all depend on staff. The public figures below come from separate reports with different denominators, so they sit beside the index as context.
The largest named staffing-loss figure in the dataset, despite a lower composite rank.
High rank, fast growth, modified reservations, and a severe named staffing figure.
A smaller park where staffing gives the ranking extra operational context.
A top-three park with a named staffing-loss figure.
Staffing is excluded from the Park Strain score because comparable park-level figures are unavailable across all 63 parks.
Index notes
These examples show how the score behaves when volume, growth, access policy, and staffing context point in different directions.
Great Smoky Mountains has around 12.2 million annual visits, the largest load in the system. It lands at #9 because recent growth and 2026 reservation status also shape the score.
Big Bend has the largest publicly reported staffing-loss figure in the dataset, roughly 50%. Its composite rank sits outside the top 20.
Arches dropped timed entry after using it to manage peak demand. Its 2026 season will show how much that system had been doing.
Congaree’s score comes from rapid visitation growth off a smaller base. Read it as a growth story first.
Methodology
Outforia ranked all 63 designated U.S. National Parks using three visitor-pressure signals: 10-year visitation growth, current visitor load, and 2026 reservation-system status. Growth counts for 45% of the score, current load counts for 25%, and reservation status counts for 30%. Raw values were normalized to a 0 to 100 scale before weighting.
Growth receives the largest weight because the index is designed to catch parks where pressure is building fast. Reservation status receives a large weight because removing crowd controls can change how peak-season demand is managed.
Staffing cuts and deferred maintenance are reported separately. Comparable park-level staffing data is unavailable for every park, and deferred-maintenance figures carry known quality caveats. Both add useful context. The composite rank stays based on growth, load, and reservation status.
The index excludes trail capacity, campsite availability, local road congestion, emergency response times, weather disruption, and live closure risk. Reservation status is a May 2026 snapshot and should be rechecked before publication. Redwood’s 2025 visitation has a counting-methodology caveat.