San Isidro Population 2026
San Isidro has a population of 45,190, making it the #102 biggest city in 🇦🇷 Argentina, located in Buenos Aires. Roughly 0.1% of Argentina's population lives here. It is about 64× smaller than Buenos Aires, the country's biggest city.
Population (city proper)
45,190
Rank in Argentina
#102
Coordinates
34.47°S, 58.52°W
~16 m elevation · America/Argentina/Buenos_Aires
Distance to capital (Buenos Aires)
21 km
13 miles, straight line
Other big cities in Buenos Aires
| City | Population | Rank in Argentina |
|---|---|---|
| Mar del Plata | 593,337 | #4 |
| Bahía Blanca | 299,101 | #10 |
| Merlo | 268,961 | #12 |
| Quilmes | 262,379 | #13 |
| José C. Paz | 230,208 | #18 |
| La Plata | 195,443 | #20 |
| Berazategui | 180,523 | #21 |
| San Miguel | 168,762 | #24 |
Cities near San Isidro
- Tigre31,106 people · ~7 km away
- Don Torcuato71,356 people · ~10 km away
- General Pacheco43,287 people · ~11 km away
- Santos Lugares37,267 people · ~15 km away
- Villa de Mayo43,405 people · ~15 km away
- Hurlingham60,000 people · ~17 km away
FAQ
What is the population of San Isidro?
San Isidro has a population of 45,190 (city proper, latest official figure via GeoNames), making it the #102 biggest city in Argentina.
What region is San Isidro in?
San Isidro is located in Buenos Aires, Argentina.
Is San Isidro the capital of Argentina?
No, the capital of Argentina is Buenos Aires, about 21 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.
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