San Justo has a population of 105,274, making it the 43rd largest place we list in Argentina. It is in Buenos Aires.
San Justo holds 0.23% of Argentina's 46,003,734 people. Buenos Aires, the largest place we list there, is 27 times its size.
105,274
population
#43
in Argentina
Nearby in size
| Place | Region | Population |
|---|---|---|
| Lomas de Zamora | Buenos Aires | 111,897 |
| San Juan | San Juan | 109,123 |
| Castelar | Buenos Aires | 107,786 |
| Santa Rosa | La Pampa | 102,860 |
| Morón | Buenos Aires | 99,066 |
| Zárate | Buenos Aires | 99,061 |
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.