Calamba's 2026 population is now estimated at 608,350. In 1950, the population of Calamba was 41,121. Calamba has grown by 13,392 in the last year, which represents a 2.25% 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 Calamba, which typically includes Calamba's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Manila | 15,531,900 | 1.98% |
| Quezon City | 2,936,116 | 1.01% |
| Cebu City | 1,081,840 | 1.91% |
| Antipolo | 1,011,440 | 2.18% |
| Antipolo | 1,011,440 | 2.18% |
| Antipolo | 1,011,440 | 2.18% |
| Dasmarinas | 857,393 | 2.18% |
| Bacoor | 791,335 | 2.21% |
| Bacolod | 688,253 | 2.02% |
| San Jose del Monte | 669,390 | 1.89% |
| Imus | 659,041 | 2.77% |
| Angeles City | 616,440 | 2.54% |
| Santa Rosa | 518,486 | 2.49% |
| Santa Rosa | 518,486 | 2.49% |
| General Trias | 487,148 | 2.63% |
| Cabuyao | 452,511 | 2.49% |
| Binan | 450,151 | 2.28% |
| Lipa City | 447,875 | 2.27% |
| Mandaue City | 442,343 | 2.01% |
| Butuan | 407,731 | 1.99% |
| San Pedro | 403,950 | 2.05% |
| San Pedro | 403,950 | 2.05% |
| Iligan | 399,664 | 1.89% |
| Cotabato | 368,701 | 2.03% |
| San Fernando | 363,201 | 1.93% |
| San Fernando | 363,201 | 1.93% |
| San Fernando | 363,201 | 1.93% |
| San Fernando | 363,201 | 1.93% |
| San Fernando | 363,201 | 1.93% |