Nagato (長門市)

City

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

Total Population

30,207

-713 (-2.31%)

Young (0–14)

8.2%

2,475

Working Age (15–64)

46.7%

14,119

Aging Rate

45.1%

13,613

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	30,207	14,040	16,167
Young (0–14)	2,475	1,258	1,217
Working Age (15–64)	14,119	7,126	6,993
Elderly (65+)	13,613	5,656	7,957

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	30,207	2,475	14,119	13,613	45.1%
2024	30,920	2,614	14,459	13,847	44.8%
2023	31,664	2,772	14,818	14,074	44.4%
2022	32,336	2,887	15,216	14,233	44.0%
2021	33,094	3,062	15,706	14,326	43.3%
2020	33,600	3,118	16,171	14,311	42.6%
2019	34,305	3,256	16,799	14,250	41.5%
2018	34,893	3,349	17,295	14,249	40.8%
2017	35,557	3,454	17,869	14,234	40.0%
2016	36,130	3,552	18,503	14,075	39.0%
2015	36,786	3,637	19,306	13,843	37.6%
2014	37,384	3,740	20,092	13,552	36.3%
2013	37,803	3,778	20,544	13,481	35.7%
2012	38,125	3,896	20,994	13,235	34.7%
2011	38,678	4,027	21,527	13,124	33.9%
2010	39,363	4,140	21,901	13,322	33.8%
2009	39,807	4,257	22,215	13,335	33.5%
2008	40,421	4,393	22,692	13,336	33.0%
2007	41,135	4,498	23,408	13,229	32.2%
2006	41,691	4,615	23,946	13,130	31.5%
2005	42,211	4,770	24,464	12,977	30.7%
2004	23,583	2,869	14,190	6,524	27.7%
2003	23,699	2,928	14,338	6,433	27.1%
2002	23,921	3,003	14,605	6,313	26.4%
2001	24,248	3,156	14,921	6,171	25.4%
2000	24,423	3,254	15,093	6,076	24.9%
1999	24,514	3,341	15,206	5,967	24.3%
1998	24,739	3,475	15,409	5,855	23.7%
1997	24,972	3,596	15,665	5,711	22.9%
1996	25,063	3,701	15,789	5,573	22.2%
1995	25,283	3,871	15,961	5,451	21.6%