Shimantocho (四万十町)

Town

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

Total Population

14,945

-453 (-2.94%)

Young (0–14)

8.8%

1,314

Working Age (15–64)

45.1%

6,739

Aging Rate

46.1%

6,892

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	14,945	7,206	7,739
Young (0–14)	1,314	672	642
Working Age (15–64)	6,739	3,562	3,177
Elderly (65+)	6,892	2,972	3,920

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	14,945	1,314	6,739	6,892	46.1%
2024	15,398	1,370	6,994	7,034	45.7%
2023	15,761	1,421	7,205	7,135	45.3%
2022	16,107	1,464	7,429	7,214	44.8%
2021	16,465	1,522	7,660	7,283	44.2%
2020	16,809	1,544	7,911	7,354	43.8%
2019	17,205	1,641	8,143	7,421	43.1%
2018	17,528	1,695	8,402	7,431	42.4%
2017	17,828	1,707	8,700	7,421	41.6%
2016	18,128	1,770	8,893	7,465	41.2%
2015	18,409	1,837	9,110	7,394	40.2%
2014	18,837	1,912	9,499	7,356	39.1%
2013	19,021	1,944	9,728	7,349	38.6%
2012	19,256	2,020	10,005	7,231	37.6%
2011	19,551	2,096	10,186	7,269	37.2%
2010	19,814	2,137	10,336	7,341	37.0%
2009	20,117	2,211	10,577	7,329	36.4%
2008	20,532	2,316	10,855	7,361	35.9%
2007	20,853	2,406	11,090	7,357	35.3%
2006	21,139	2,443	11,392	7,304	34.6%