San Juan Population 2026
San Juan has a population of 78,153, making it the #30 biggest city in 🇵🇪 Peru, located in Loreto. Roughly 0.2% of Peru's population lives here. It is about 99× smaller than Lima, the country's biggest city.
Population (city proper)
78,153
Rank in Peru
#30
Coordinates
3.78°S, 73.28°W
~99 m elevation · America/Lima
Distance to capital (Lima)
1,007 km
625 miles, straight line
Other big cities in Loreto
| City | Population | Rank in Peru |
|---|---|---|
| Iquitos | 377,609 | #9 |
| Yurimaguas | 41,827 | #64 |
| Requena | 25,300 | #91 |
| Contamana | 20,900 | #109 |
Cities near San Juan
FAQ
What is the population of San Juan?
San Juan has a population of 78,153 (city proper, latest official figure via GeoNames), making it the #30 biggest city in Peru.
What region is San Juan in?
San Juan is located in Loreto, Peru.
Is San Juan the capital of Peru?
No, the capital of Peru is Lima, about 1,007 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.