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Devils Postpile National MonumentvsRoger Williams National Memorial

Devils Postpile National Monument has a higher Annual Visitors (2025) (99,652 vs 38,959 visitors), while Roger Williams National Memorial has a higher Longitude (-71 vs -119 °), while Roger Williams National Memorial has a higher Latitude (42 vs 38 °).

Location & Classification

National Monument
Designation
National Memorial
CA
State(s)
RI
38
Latitude
42
-119
Longitude
-71

Size & Visitation

800
Total Area
N/A
99,652
Annual Visitors (2025)
38,959

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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)).