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National Park Explorer

All 63 national parks

Every boundary as the National Park Service draws it. Click a park on the map or in the list.

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Show the other 374 NPS units

Boundaries are the authoritative ones: the National Park Service's Land Resources Division boundary service, all 437 units of it, simplified to 40 m for the parks and 80 m for everything else so the whole country fits in two files. A boundary is the legislated line, which is why it can enclose more ground than the acreage report credits to the park — the report counts federally owned land inside the line, and inholdings are common. Park-and-preserve units are drawn as the park alone, since NPS files the preserve as its own unit; New River Gorge is the exception NPS draws whole.

Dates, acreage and visits come from NPS's own acreage and visitor-use reports as transcribed in Wikipedia's List of national parks of the United States, along with the park descriptions, which are reused here under CC BY-SA 4.0. Areas measured off the polygons are computed here on a sphere and labelled as such. Rendering by MapLibre GL JS (5.6.1, self-hosted), basemap OpenFreeMap, tiles © OpenStreetMap contributors. No server does any GIS: the boundaries are static files and every filter runs in your browser.