Kochi's 2025 population is now estimated at 3,604,550. In 1950, the population of Kochi was 230,173. Kochi has grown by 97,500 in the last year, which represents a 2.78% 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 Kochi, which typically includes Kochi's population in addition to adjacent suburban areas.
| City | 2025 Pop. ↓ | Growth |
|---|---|---|
| Tokyo | 37,036,200 | -0.21% |
| Osaka | 18,921,600 | -0.24% |
| Nagoya | 9,534,790 | -0.23% |
| Fukuoka | 5,465,920 | -0.22% |
| Shizuoka | 2,930,170 | -0.18% |
| Sapporo | 2,653,580 | -0.28% |
| Sendai | 2,337,590 | -0.16% |
| Hiroshima | 2,058,190 | -0.23% |
| Niigata | 793,974 | -0.24% |
| Kumamoto | 735,149 | -0.22% |
| Okayama | 718,616 | -0.24% |
| Kagoshima | 578,881 | -0.4% |
| Utsunomiya | 517,568 | -0.24% |
| Matsuyama | 502,185 | -0.29% |
| Oita | 474,415 | -0.22% |
| Kurashiki | 470,339 | -0.23% |
| Kanazawa | 461,142 | -0.24% |
| Fukuyama | 460,453 | -0.23% |
| Takamatsu | 414,621 | -0.23% |
| Toyama | 405,849 | -0.36% |
