Suooshima (周防大島町)

Town

Yamaguchi (山口) — 2025 — Based on Basic Resident Register

Total Population

13,537

-360 (-2.59%)

Young (0–14)

5.8%

785

Working Age (15–64)

38.6%

5,228

Aging Rate

55.6%

7,524

Population Trends (2005–2025)

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

Category	Total	Male	Female
Total	13,537	6,330	7,207
Young (0–14)	785	430	355
Working Age (15–64)	5,228	2,706	2,522
Elderly (65+)	7,524	3,194	4,330

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	13,537	785	5,228	7,524	55.6%
2024	13,897	817	5,393	7,687	55.3%
2023	14,346	856	5,602	7,888	55.0%
2022	14,808	913	5,779	8,116	54.8%
2021	15,242	944	6,024	8,274	54.3%
2020	15,775	973	6,354	8,448	53.6%
2019	16,320	1,049	6,602	8,669	53.1%
2018	16,756	1,083	6,875	8,798	52.5%
2017	17,237	1,133	7,157	8,947	51.9%
2016	17,649	1,176	7,419	9,054	51.3%
2015	18,078	1,246	7,772	9,060	50.1%
2014	18,536	1,303	8,191	9,042	48.8%
2013	18,748	1,307	8,338	9,103	48.6%
2012	19,110	1,355	8,634	9,121	47.7%
2011	19,464	1,395	8,860	9,209	47.3%
2010	19,889	1,452	9,015	9,422	47.4%
2009	20,266	1,516	9,271	9,479	46.8%
2008	20,720	1,587	9,543	9,590	46.3%
2007	21,205	1,663	9,877	9,665	45.6%
2006	21,700	1,747	10,258	9,695	44.7%
2005	22,105	1,783	10,526	9,796	44.3%