Niyodogawa (仁淀川町)

Town

Kochi (高知) — 2025 — Based on Basic Resident Register

Total Population

4,459

-196 (-4.21%)

Young (0–14)

6.5%

292

Working Age (15–64)

36.5%

1,628

Aging Rate

55.8%

2,490

Population Trends (2006–2025)

* Data before 2012 includes Japanese residents only (foreign residents were added to the Basic Resident Register in July 2012)

Category	Total	Male	Female
Total	4,459	2,186	2,273
Young (0–14)	292	171	121
Working Age (15–64)	1,628	908	720
Elderly (65+)	2,490	1,084	1,406

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	4,459	292	1,628	2,490	55.8%
2024	4,655	314	1,700	2,603	55.9%
2023	4,795	321	1,750	2,693	56.2%
2022	4,970	330	1,857	2,743	55.2%
2021	5,106	338	1,920	2,800	54.8%
2020	5,224	352	1,985	2,852	54.6%
2019	5,371	352	2,088	2,903	54.0%
2018	5,555	360	2,196	2,974	53.5%
2017	5,753	376	2,292	3,053	53.1%
2016	5,962	404	2,377	3,134	52.6%
2015	6,160	418	2,504	3,192	51.8%
2014	6,317	453	2,617	3,208	50.8%
2013	6,410	477	2,671	3,230	50.4%
2012	6,562	504	2,798	3,260	49.7%
2011	6,776	537	2,927	3,312	48.9%
2010	6,964	558	3,005	3,401	48.8%
2009	7,106	591	3,113	3,402	47.9%
2008	7,296	683	3,258	3,355	46.0%
2007	7,498	657	3,348	3,493	46.6%
2006	7,694	696	3,505	3,493	45.4%