Tosacho (土佐町)

Town

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

Total Population

3,488

-34 (-0.97%)

Young (0–14)

9.3%

326

Working Age (15–64)

43.7%

1,523

Aging Rate

45.7%

1,593

Population Trends (1995–2025)

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

Category	Total	Male	Female
Total	3,488	1,711	1,777
Young (0–14)	326	170	156
Working Age (15–64)	1,523	833	690
Elderly (65+)	1,593	695	898

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	3,488	326	1,523	1,593	45.7%
2024	3,522	339	1,538	1,611	45.7%
2023	3,625	364	1,613	1,617	44.6%
2022	3,704	364	1,664	1,645	44.4%
2021	3,784	367	1,695	1,694	44.8%
2020	3,826	367	1,728	1,703	44.5%
2019	3,899	374	1,777	1,719	44.1%
2018	3,970	381	1,820	1,743	43.9%
2017	4,028	390	1,873	1,746	43.3%
2016	4,084	393	1,918	1,753	42.9%
2015	4,109	368	1,995	1,721	41.9%
2014	4,181	382	2,046	1,727	41.3%
2013	4,245	388	2,097	1,734	40.8%
2012	4,316	393	2,184	1,739	40.3%
2011	4,407	408	2,228	1,771	40.2%
2010	4,466	407	2,260	1,799	40.3%
2009	4,520	406	2,301	1,813	40.1%
2008	4,610	420	2,361	1,829	39.7%
2007	4,724	440	2,457	1,827	38.7%
2006	4,766	450	2,496	1,820	38.2%
2005	4,851	487	2,542	1,822	37.6%
2004	4,914	502	2,605	1,807	36.8%
2003	5,015	556	2,666	1,793	35.8%
2002	5,107	586	2,742	1,779	34.8%
2001	5,119	599	2,785	1,735	33.9%
2000	5,194	640	2,852	1,702	32.8%
1999	5,255	663	2,908	1,684	32.0%
1998	5,358	697	3,040	1,621	30.3%
1997	5,407	732	3,099	1,576	29.1%
1996	5,477	763	3,167	1,547	28.2%
1995	5,505	774	3,241	1,490	27.1%