Thrissur's 2025 population is now estimated at 3,719,980. In 1950, the population of Thrissur was 126,380. Thrissur has grown by 114,740 in the last year, which represents a 3.18% 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 Thrissur, which typically includes Thrissur's population in addition to adjacent suburban areas.
| City | 2025 Pop. ↓ | Growth |
|---|---|---|
| Delhi | 34,665,600 | 2.54% |
| Mumbai | 22,089,000 | 1.92% |
| Kolkata | 15,845,200 | 1.76% |
| Bangalore | 14,395,400 | 2.76% |
| Chennai | 12,336,000 | 2.34% |
| Hyderabad | 11,337,900 | 2.43% |
| Ahmedabad | 9,061,820 | 2.34% |
| Surat | 8,581,730 | 3.02% |
| Pune | 7,525,720 | 2.45% |
| Jaipur | 4,411,110 | 2.38% |
| Kozhikode | 4,387,410 | 3.38% |
| Malappuram | 4,343,910 | 3.8% |
| Lucknow | 4,132,670 | 2.34% |
| Thrissur | 3,719,980 | 3.18% |
| Kochi | 3,604,550 | 2.78% |
| Indore | 3,482,830 | 2.64% |
| Kanpur | 3,345,370 | 1.8% |
| Nagpur | 3,170,180 | 2.06% |
| Coimbatore | 3,158,720 | 2.43% |
| Thiruvananthapuram | 3,072,530 | 2.96% |
