Map of San Juan, Loreto, Peru

San Juan is a city in Loreto, Peru, with a population of about 78,153. It lies at 3.7761°S, 73.2814°W. San Juan is about 1,007 km (626 mi) northeast of Lima, the capital. The nearest city on our map is Iquitos, 4 km to the northeast.

San Juan at a glance

Where is San Juan?

• The 30th largest city in Peru by recorded population.
• The 2nd largest city in Loreto on this site.
• Located in the Southern and Western hemispheres.
• Daylight ranges from about 11 h 54 min on the shortest day to 12 h 20 min on the longest day (around 21 June and 21 December).

Cities near San Juan

• Iquitos — 4 km northeast
• Benjamin Constant — 367 km east, Brazil
• Leticia — 374 km east, Colombia
• Tabatinga — 374 km east, Brazil
• Yurimaguas — 394 km southwest
• Cruzeiro do Sul — 433 km south, Brazil
• Moyobamba — 480 km southwest
• Eirunepé — 495 km southeast, Brazil
• Juanjuí — 537 km southwest
• Puerto Francisco de Orellana — 552 km northwest, Ecuador

Largest cities in Loreto

• Iquitos — 377,609
• Yurimaguas — 41,827

Largest cities in Peru

• Lima — 7,737,002
• Callao — 1,226,200
• Arequipa — 1,195,700
• Trujillo — 1,067,700
• Piura — 630,000
• Chiclayo — 609,400
• Huancayo — 456,250
• Cusco — 428,450
• Iquitos — 377,609
• Pucallpa — 326,040

Map of Peru and all its cities →

Other places named San Juan

• San Juan — San Juan, Puerto Rico
• San Juan — National Capital Region, Philippines
• San Juan — San Juan, Argentina
• San Juan — Texas, United States

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.