San Nicolás de los Arroyos Population 2026
San Nicolás de los Arroyos has a population of 134,217, making it the #30 biggest city in 🇦🇷 Argentina, located in Buenos Aires. Roughly 0.3% of Argentina's population lives here. It is about 22× smaller than Buenos Aires, the country's biggest city.
Population (city proper)
134,217
Rank in Argentina
#30
Coordinates
33.33°S, 60.21°W
~28 m elevation · America/Argentina/Buenos_Aires
Distance to capital (Buenos Aires)
221 km
137 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 Nicolás de los Arroyos
- Villa Constitución44,271 people · ~16 km away
- Arroyo Seco20,620 people · ~34 km away
- Gobernador Gálvez74,650 people · ~52 km away
- Rosario948,312 people · ~59 km away
- San Pedro47,452 people · ~63 km away
- Pérez24,436 people · ~64 km away
FAQ
What is the population of San Nicolás de los Arroyos?
San Nicolás de los Arroyos has a population of 134,217 (city proper, latest official figure via GeoNames), making it the #30 biggest city in Argentina.
What region is San Nicolás de los Arroyos in?
San Nicolás de los Arroyos is located in Buenos Aires, Argentina.
Is San Nicolás de los Arroyos the capital of Argentina?
No, the capital of Argentina is Buenos Aires, about 221 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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