Devils Postpile National MonumentvsWaco Mammoth National Monument
Devils Postpile National Monument has a higher Total Area (800 vs 107 acres), while Waco Mammoth National Monument has a higher Longitude (-97 vs -119 °), while Devils Postpile National Monument has a higher Latitude (38 vs 32 °).
Location & Classification
National Monument
Designation
National Monument
CA
State(s)
TX
38
Latitude
32
-119
Longitude
-97
Size & Visitation
800
Total Area
107
99,652
Annual Visitors (2025)
91,678
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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)).