Devils Postpile National MonumentvsHampton National Historic Site

Devils Postpile National Monument has a higher Total Area (800 vs 62 acres), while Devils Postpile National Monument has a higher Annual Visitors (2025) (99,652 vs 48,158 visitors), while Hampton National Historic Site has a higher Longitude (-77 vs -119 °).

Location & Classification

National Monument

Designation

National Historic Site

CA

State(s)

MD

38

Latitude

39

-119

Longitude

-77

Size & Visitation

800

Total Area

62

99,652

Annual Visitors (2025)

48,158

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Data sourced from NPS Boundary & Tract Data Service (US Government (public domain)), NPS Visitor Use Statistics (2025) (CC0 (public domain)), NPS Acreage Report (Q1 2026) (US Government (public domain)).