Nakatosa (中土佐町)

Town

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

Total Population

5,774

-167 (-2.81%)

Young (0–14)

6.9%

400

Working Age (15–64)

43.1%

2,486

Aging Rate

50.0%

2,888

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	5,774	2,710	3,064
Young (0–14)	400	195	205
Working Age (15–64)	2,486	1,294	1,192
Elderly (65+)	2,888	1,221	1,667

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	5,774	400	2,486	2,888	50.0%
2024	5,941	430	2,560	2,906	48.9%
2023	6,106	445	2,651	2,981	48.8%
2022	6,283	458	2,748	3,045	48.5%
2021	6,473	513	2,852	3,070	47.4%
2020	6,693	549	3,017	3,085	46.1%
2019	6,868	561	3,128	3,140	45.7%
2018	7,050	591	3,272	3,152	44.7%
2017	7,199	603	3,441	3,126	43.4%
2016	7,369	619	3,590	3,127	42.4%
2015	7,520	631	3,748	3,104	41.3%
2014	7,689	667	3,935	3,049	39.7%
2013	7,790	688	4,029	3,030	38.9%
2012	7,887	727	4,152	3,008	38.1%
2011	7,967	765	4,245	2,957	37.1%
2010	8,115	787	4,309	3,019	37.2%
2009	8,249	810	4,407	3,032	36.8%
2008	8,383	847	4,497	3,039	36.3%
2007	8,533	900	4,619	3,014	35.3%
2006	8,688	944	4,758	2,986	34.4%
2005	7,197	810	4,024	2,363	32.8%
2004	7,261	833	4,093	2,335	32.2%
2003	7,353	848	4,168	2,337	31.8%
2002	7,387	851	4,223	2,313	31.3%
2001	7,483	885	4,323	2,275	30.4%
2000	7,528	933	4,367	2,228	29.6%
1999	7,638	873	4,523	2,242	29.4%
1998	7,701	850	4,507	2,344	30.4%
1997	7,818	937	4,623	2,258	28.9%
1996	7,899	970	4,727	2,202	27.9%
1995	8,002	1,007	4,829	2,166	27.1%