Population of San Nicolás de los Arroyos, Argentina as of January 2026. How many people live in San Nicolás de los Arroyos today?

The exact population of San Nicolás de los Arroyos as of January 2026 is estimated at 133,602 residents. Please note: this figure is an estimate and may slightly change as people get born and pass away, it also depends on migration to/from San Nicolás de los Arroyos.

Check out more data on population in Argentina:

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• Virrey del Pino
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• Trujui
• Trelew
• Ramos Mejía
• Castelar