Devils Postpile National MonumentvsWalnut Canyon National Monument
Walnut Canyon National Monument has a higher Total Area (3,201 vs 800 acres), while Walnut Canyon National Monument has a higher Annual Visitors (2025) (153,317 vs 99,652 visitors), while Devils Postpile National Monument has a higher Latitude (38 vs 35 °).
Location & Classification
National Monument
Designation
National Monument
CA
State(s)
AZ
38
Latitude
35
-119
Longitude
-112
Size & Visitation
800
Total Area
3,201
99,652
Annual Visitors (2025)
153,317
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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)).