Peru and Ecuador: Geography, Borders, and Key Facts

Peru and Ecuador are neighboring nations on the western coast of South America, sharing a border and a Pacific coastline, yet differing greatly in size, population, and geography.

Peru

• Location: Western South America.
• Borders: Ecuador & Colombia (north), Brazil (east), Bolivia (southeast), Chile (south), Pacific Ocean (west).
• Area: 1,285,216 km² (496,225 sq mi) – 3rd largest in South America.
• Population: ~34 million (2024 est.) – 4th most populous in region.
• Capital: Lima.
• Geography: Coastal desert, Andes Mountains (including Huascarán, 6,768 m), Amazon rainforest (covers 60% of territory).

Ecuador

• Location: Northwestern South America, straddling the equator.
• Borders: Colombia (north), Peru (south & east), Pacific Ocean (west).
• Area: 283,561 km² (109,484 sq mi) – 4th smallest in South America.
• Population: ~18 million (2024 est.).
• Capital: Quito (highest constitutional capital at 2,850 m).
• Geography: Coastal lowlands, Andean highlands (Avenue of Volcanoes), Amazonian east (Oriente), plus the Galápagos Islands (~1,000 km offshore).

Shared History & Tensions

Both were part of the Inca Empire's northern reaches and later the Spanish Viceroyalty of Peru. Post-independence, they fought several wars over Amazonian territory (1858–1860, 1941, 1981, 1995). The 1998 Peace Treaty finally demarcated the border, enabling cooperation on trade, environment, and cross-border indigenous rights.

Economic Contrast

Peru's economy is larger and more diversified (mining, agriculture, fishing, manufacturing). Ecuador is heavily dependent on oil exports and remittances, though it uses the U.S. dollar as currency (since 2000), providing monetary stability.

Together, they anchor the Andean Community and share the Amazon's headwaters—a vital ecological corridor.