National Park System units in Iowa
Iowa has 2 National Park System units. The list below also includes 2 places the Park Service does not count as units of their own. Each one has its own page here with hours, current alerts, campgrounds and what there is to do.
Iowa in figures
- National Park System units
- 2
- Free to enter
- 2
- Recreation visits in 2025
- 163,584
- Busiest unit, 106,672 visits
- Herbert Hoover National Historic Site
A unit that reaches into another state counts in full here and in each other state it touches.
Free to enter Charges an entrance feePoints are the Park Service reference point for each unit, not a boundary.
Visits by year
Fees, hours, alerts, campgrounds and activities are from the NPS API. Data refreshed October 14, 2026.