Posadas's 2026 population is now estimated at 424,853. In 1950, the population of Posadas was 45,612. Posadas has grown by 4,890 in the last year, which represents a 1.16% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Posadas, which typically includes Posadas's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Buenos Aires | 15,890,600 | 0.88% |
| Cordoba | 1,655,500 | 0.91% |
| Rosario | 1,648,320 | 1.06% |
| Mendoza | 1,271,120 | 1.11% |
| San Miguel de Tucuman | 1,062,270 | 1.07% |
| La Plata | 942,456 | 0.99% |
| Salta | 745,986 | 1.14% |
| San Juan | 565,946 | 0.91% |
| Resistencia | 460,926 | 0.99% |
| Corrientes | 436,980 | 1.03% |
| San Salvador de Jujuy | 387,488 | 1.04% |
| Bahia Blanca | 330,154 | 0.86% |
| La Rioja | 178,872 | 1.02% |
| Comodoro Rivadavia | 175,196 | 1.03% |
| San Fernando del Valle de Catamarca | 159,139 | 1.01% |
| Rio Cuarto | 157,010 | 1.01% |
| Concordia | 149,450 | 1% |
| San Nicolas de los Arroyos | 133,602 | 1.01% |
| San Rafael | 118,009 | 1.01% |
| Tandil | 116,916 | 1.02% |
| Villa Mercedes | 111,391 | 1.02% |
| San Carlos de Bariloche | 109,305 | 1.02% |
| Pergamino | 104,985 | 1.02% |
| Santa Rosa | 102,880 | 1% |
| Santa Rosa | 102,880 | 1% |
| Lujan | 97,363 | 1.04% |
| Rio Gallegos | 95,796 | 1.02% |
| Rafaela | 91,571 | 1.01% |
| Presidencia Roque Saenz Pena | 89,882 | 1.02% |
| Junin | 87,509 | 1.01% |
| Chimbas | 87,258 | 1.02% |
| Campana | 86,860 | 1.01% |
| Necochea | 84,784 | 1.03% |
| General Roca | 81,534 | 1.02% |
| Puerto Madryn | 81,315 | 1.04% |
| Gualeguaychu | 80,614 | 1.01% |
| San Martin | 79,476 | 1.05% |
| San Martin | 79,476 | 1.05% |
| Villa Maria | 79,351 | 1.01% |
| Cipolletti | 77,713 | 1.02% |
| San Ramon de la Nueva Oran | 76,070 | 1.01% |
| Venado Tuerto | 75,437 | 1.01% |
| Concepcion del Uruguay | 72,528 | 1.01% |
| Goya | 71,606 | 1.01% |
| Reconquista | 70,549 | 1.01% |
| Rio Grande | 66,425 | 1.03% |
| Santo Tome | 65,684 | 1.13% |
| Santo Tome | 65,684 | 1.13% |
| Obera | 63,960 | 1.02% |
| Tartagal | 63,196 | 1.01% |
| Villa Carlos Paz | 62,423 | 1% |
| San Francisco | 61,750 | 1.01% |
| Punta Alta | 58,315 | 1% |
| Chivilcoy | 58,152 | 1.01% |
| General Pico | 56,795 | 1.01% |
| Ushuaia | 56,593 | 1.03% |
| Mercedes | 56,116 | 1.01% |
| Mercedes | 56,116 | 1.01% |
| Azul | 55,728 | 1.01% |
| Barranqueras | 54,698 | 1.01% |
| Clorinda | 52,837 | 1.01% |
| Viedma | 52,789 | 1.01% |
| Palpala | 50,183 | 1.01% |