Key Takeaways
- The Grand Canyon hosts 355 bird species, including 50 breeders.
- 89 mammal species inhabit the Grand Canyon ecosystem.
- The park records 56 reptile species, including 18 lizards.
- The Vishnu Schist basement rock is exposed over 20 miles along the inner gorge.
- The Grand Canyon's rock layers represent 1.8 billion years of Earth's history.
- Kaibab Limestone caps the rims, formed 270 million years ago in a tropical sea.
- The Grand Canyon was first visited by Europeans in 1540 by Garcia Lopez de Cardenas.
- John Wesley Powell led the first river expedition through the canyon in 1869.
- The Havasupai Tribe has inhabited the canyon for over 1,000 years.
- The Grand Canyon measures 277 miles (446 km) in length from Lake Powell to Lake Mead.
- The widest point of the Grand Canyon spans 18 miles (29 km) across.
- The average width of the Grand Canyon is approximately 10 miles (16 km).
- Annual visitation to Grand Canyon National Park exceeded 5 million in 2018.
- In 2022, 4.7 million visitors entered the park.
- South Rim attracts 90% of all visitors annually.
From ancient rocks to thriving wildlife, Grand Canyon National Park shelters astonishing biodiversity and millions of visitors.
Related reading
Biodiversity
Biodiversity Interpretation
Geological Features
Geological Features Interpretation
Historical Facts
Historical Facts Interpretation
Physical Dimensions
Physical Dimensions Interpretation
Visitor Statistics
Visitor Statistics Interpretation
How We Rate Confidence
Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.
Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.
AI consensus: 1 of 4 models agree
Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.
AI consensus: 2–3 of 4 models broadly agree
All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.
AI consensus: 4 of 4 models fully agree
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
Gabrielle Fontaine. (2026, February 13). Grand Canyon Statistics. Gitnux. https://gitnux.org/grand-canyon-statistics
Gabrielle Fontaine. "Grand Canyon Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/grand-canyon-statistics.
Gabrielle Fontaine. 2026. "Grand Canyon Statistics." Gitnux. https://gitnux.org/grand-canyon-statistics.
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