San Juan de Marcona's 2026 population is now estimated at 21,566. In 1993, the population of San Juan de Marcona was 12,919. San Juan de Marcona has grown by 645 in the last year, which represents a 3.08% annual change. These population values and projections come from Peru city census series 1993-2017 via CityPopulation official attribution, Peru city projection 2022 via CityPopulation official attribution and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Lima | 12,003,443 | 1.82% |
| Arequipa | 1,188,831 | 1.38% |
| Trujillo | 1,129,355 | 2.45% |
| Chiclayo | 696,106 | 1.22% |
| Piura | 609,909 | 2.75% |
| Cusco | 522,320 | 1.49% |
| Huancayo | 476,971 | 1.42% |
| Iquitos | 452,836 | 1.26% |
| Pucallpa | 434,055 | 2.29% |
| Chimbote | 419,890 | 1.53% |
| Tacna | 363,022 | 2.1% |
| Ica | 362,426 | 2.71% |
| Juliaca | 346,068 | 2.23% |
| Ayacucho | 258,645 | 1.88% |
| Chincha Alta | 243,242 | 2.58% |
| Cajamarca | 242,196 | 1.57% |
| Huanuco | 236,367 | 1.66% |
| Sullana | 220,092 | 1.41% |
| Tarapoto | 185,781 | 2.27% |
| Huacho | 176,703 | 0.57% |