Kochi population pyramid 2020
- Population
- 691,527
- Aged 0–14
- 10.9%
- Aged 15–64
- 53.6%
- Aged 65+
- 35.5%
- Aged 75+
- 19.0%
- vs 2020
- +0.0%
Population by sex and five-year age group (men left, women right). The axis is fixed across 2020–2050 so years can be compared.
Kochi at a glance
In 2020 the population of Kochi was 691,527: 10.9% aged 0–14, 53.6% aged 15–64 and 35.5% aged 65 and over (19.0% aged 75+).
From 691,527 in 2020 it is projected to shrink by 34.8% to 450,980 in 2050; the share aged 65+ rises from 35.5% to 45.6%.
Among the 47 prefectures, it ranks 3rd smallest by population in 2020, 4th largest by the size of the decline from 2020 to 2050, and 4th highest by the share aged 65+ in 2050.
The future of Kochi, compared
| 2020 | 2050 | Change | 65+ (2020) | 65+ (2050) | 0–14 (2050) | |
|---|---|---|---|---|---|---|
| Kochi | 691,527 | 450,980 | -34.8% | 35.5% | 45.6% | 8.7% |
| Japan | 126.1 million | 104.7 million | -17.0% | 28.6% | 37.1% | 9.9% |
Trends 2020–2050
Population
Share aged 65+ (%)
Municipalities of Kochi
Municipality pages are in Japanese.
| Municipality | 2020 | 2050 | Change | 65+ (2050) |
|---|---|---|---|---|
| 高知市 | 326,545 | 241,483 | -26.0% | 42.4% |
| 室戸市 | 11,742 | 3,777 | -67.8% | 65.7% |
| 安芸市 | 16,243 | 8,409 | -48.2% | 54.3% |
| 南国市 | 46,664 | 33,108 | -29.1% | 42.6% |
| 土佐市 | 25,732 | 16,391 | -36.3% | 43.0% |
| 須崎市 | 20,590 | 10,434 | -49.3% | 52.1% |
| 宿毛市 | 19,033 | 9,651 | -49.3% | 57.1% |
| 土佐清水市 | 12,388 | 5,124 | -58.6% | 62.9% |
| 四万十市 | 32,694 | 20,436 | -37.5% | 49.2% |
| 香南市 | 32,207 | 24,703 | -23.3% | 41.1% |
| 香美市 | 26,513 | 17,253 | -34.9% | 42.5% |
| 東洋町 | 2,194 | 870 | -60.3% | 67.5% |
| 奈半利町 | 3,034 | 1,723 | -43.2% | 54.9% |
| 田野町 | 2,498 | 1,257 | -49.7% | 51.8% |
| 安田町 | 2,370 | 1,043 | -56.0% | 57.1% |
| 北川村 | 1,146 | 583 | -49.1% | 54.9% |
| 馬路村 | 745 | 343 | -54.0% | 42.6% |
| 芸西村 | 3,694 | 2,536 | -31.3% | 46.7% |
| 本山町 | 3,261 | 1,599 | -51.0% | 54.9% |
| 大豊町 | 3,252 | 1,016 | -68.8% | 66.1% |
| 土佐町 | 3,753 | 2,161 | -42.4% | 50.9% |
| 大川村 | 366 | 174 | -52.5% | 39.7% |
| いの町 | 21,374 | 10,940 | -48.8% | 54.6% |
| 仁淀川町 | 4,827 | 1,821 | -62.3% | 61.1% |
| 中土佐町 | 6,002 | 2,494 | -58.4% | 64.0% |
| 佐川町 | 12,323 | 7,336 | -40.5% | 52.4% |
| 越知町 | 5,187 | 2,521 | -51.4% | 57.4% |
| 檮原町 | 3,307 | 1,400 | -57.7% | 55.7% |
| 日高村 | 4,812 | 2,654 | -44.8% | 56.4% |
| 津野町 | 5,291 | 2,646 | -50.0% | 56.7% |
| 四万十町 | 15,607 | 7,595 | -51.3% | 54.1% |
| 大月町 | 4,434 | 1,807 | -59.2% | 62.6% |
| 三原村 | 1,437 | 721 | -49.8% | 58.7% |
| 黒潮町 | 10,262 | 4,971 | -51.6% | 56.1% |
Municipalities of Kochi with the largest decline (2020→2050)
Related pages
Source: processed from the National Institute of Population and Social Security Research, Regional Population Projections for Japan (2023) (https://www.ipss.go.jp/pp-shicyoson/j/shicyoson23/t-page.asp). 2020 is the census; 2025 onwards are projections.