Kamiamakusa (上天草市)

City

Kumamoto (熊本) — 2025 — Based on Basic Resident Register

Total Population

23,592

-693 (-2.85%)

Young (0–14)

9.0%

2,114

Working Age (15–64)

46.6%

10,984

Aging Rate

44.5%

10,494

Population Trends (2004–2025)

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

Category	Total	Male	Female
Total	23,592	11,259	12,333
Young (0–14)	2,114	1,063	1,051
Working Age (15–64)	10,984	5,604	5,380
Elderly (65+)	10,494	4,592	5,902

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	23,592	2,114	10,984	10,494	44.5%
2024	24,285	2,253	11,454	10,578	43.6%
2023	25,015	2,399	11,928	10,688	42.7%
2022	25,652	2,514	12,368	10,770	42.0%
2021	26,254	2,622	12,895	10,737	40.9%
2020	26,756	2,692	13,386	10,678	39.9%
2019	27,311	2,772	13,948	10,591	38.8%
2018	27,924	2,884	14,440	10,600	38.0%
2017	28,520	2,973	14,989	10,558	37.0%
2016	29,108	3,040	15,465	10,529	36.2%
2015	29,746	3,183	16,002	10,485	35.2%
2014	30,322	3,307	16,642	10,373	34.2%
2013	30,647	3,406	16,857	10,312	33.6%
2012	31,088	3,544	17,412	10,132	32.6%
2011	31,632	3,681	17,931	10,020	31.7%
2010	32,193	3,801	18,221	10,171	31.6%
2009	32,783	3,996	18,591	10,196	31.1%
2008	33,380	4,152	19,015	10,213	30.6%
2007	34,060	4,341	19,458	10,261	30.1%
2006	34,732	4,551	19,950	10,231	29.5%
2005	35,191	4,733	20,276	10,182	28.9%
2004	35,661	4,914	20,595	10,152	28.5%