[contrahax]

Is there a link to the raw data anywhere? Wasn’t able to find it via the NPS website or data.gov

[jffry]

I believe it's https://irma.nps.gov/Stats/Reports/Park - drill into an individual park like Yellowstone and you'll see the "Overnight Stays" data

[mooreds]

See

https://irma.nps.gov/Stats/

Here's the list of stats for Rocky Mountain:

https://irma.nps.gov/Stats/Reports/Park/ROMO

Looks like OP pulled from the Recreation Visits By Month report.