Trip Planning · February 2026 · 2 min read
How to Read National Park Visitation Data
The National Park Service publishes a goldmine of visitation numbers. Here is how to turn them into a better trip.
The National Park Service counts visitors and publishes the results, going back decades. It is one of the most useful open datasets in travel — and almost nobody uses it to plan.
Here is what the numbers mean and how we turn them into the crowd curves on this site.
What “recreation visits” actually count
The headline number is “recreation visits” — people entering for recreation, estimated from traffic counters, entrance data and sampling. It is not a perfect headcount, but it is consistent over time, which is what matters for comparing months and years.
From raw counts to a crowd index
Raw monthly totals are hard to compare across parks of different sizes. So we convert each month to a crowd index: that month’s visits divided by the park’s own average month. A 1.0× month is typical for that park; 2.0× is twice as busy as usual. This normalizes every park onto the same scale.
Reading the trend
Year-over-year, visitation tells you whether a park is getting busier. We compare the recent decade to flag rising and falling parks — a useful signal for how much competition to expect for permits and lodging.
The limits
Monthly data hides within-month and within-day spikes — a holiday weekend can dominate a “quiet” month. And counting methods differ between parks, so cross-park totals deserve caution. We lean on within-park, month-to-month comparisons, which are the most reliable cut.
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Frequently Asked Questions
The National Park Service Visitor Use Statistics program, which publishes monthly and annual recreation-visit counts for every unit that reports them. It is free and public.
They are estimates, not turnstile counts, but they are methodologically consistent over time — which makes month-to-month and year-to-year comparisons within a park reliable, even if absolute totals carry uncertainty.
Keep reading
Sources: National Park Service Visitor Use Statistics and NOAA NCEI U.S. Climate Normals 1991–2020. Rankings and figures update as new NPS monthly data is released. Last updated 2026-07-14.