Motoyama (本山町)

Town

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

Total Population

3,125

-81 (-2.53%)

Young (0–14)

7.7%

240

Working Age (15–64)

44.3%

1,384

Aging Rate

46.8%

1,461

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	3,125	1,485	1,640
Young (0–14)	240	114	126
Working Age (15–64)	1,384	766	618
Elderly (65+)	1,461	584	877

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	3,125	240	1,384	1,461	46.8%
2024	3,206	250	1,428	1,483	46.3%
2023	3,299	268	1,462	1,534	46.5%
2022	3,340	276	1,482	1,556	46.6%
2021	3,425	294	1,512	1,597	46.6%
2020	3,477	303	1,546	1,606	46.2%
2019	3,503	311	1,588	1,582	45.2%
2018	3,590	313	1,634	1,608	44.8%
2017	3,538	300	1,659	1,555	44.0%
2016	3,598	317	1,692	1,570	43.6%
2015	3,703	334	1,753	1,590	42.9%
2014	3,795	345	1,835	1,595	42.0%
2013	3,833	339	1,887	1,585	41.4%
2012	3,889	346	1,954	1,589	40.9%
2011	3,923	334	1,984	1,605	40.9%
2010	3,991	342	2,011	1,638	41.0%
2009	4,021	331	2,048	1,642	40.8%
2008	4,085	343	2,096	1,646	40.3%
2007	4,144	349	2,136	1,659	40.0%
2006	4,238	387	2,192	1,659	39.1%
2005	4,266	403	2,240	1,623	38.0%
2004	4,358	430	2,291	1,637	37.6%
2003	4,463	453	2,370	1,640	36.7%
2002	4,522	483	2,421	1,618	35.8%
2001	4,560	490	2,457	1,613	35.4%
2000	4,618	504	2,536	1,578	34.2%
1999	4,641	522	2,575	1,544	33.3%
1998	4,704	554	2,640	1,510	32.1%
1997	4,758	563	2,724	1,471	30.9%
1996	4,825	583	2,810	1,432	29.7%
1995	4,868	595	2,874	1,399	28.7%