Koshi (合志市)

City

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

Total Population

65,160

+409 (0.63%)

Young (0–14)

18.0%

11,711

Working Age (15–64)

57.6%

37,564

Aging Rate

24.4%

15,885

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	65,160	31,653	33,507
Young (0–14)	11,711	6,024	5,687
Working Age (15–64)	37,564	18,688	18,876
Elderly (65+)	15,885	6,941	8,944

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	65,160	11,711	37,564	15,885	24.4%
2024	64,751	11,803	37,230	15,718	24.3%
2023	64,474	11,835	37,078	15,561	24.1%
2022	63,701	11,744	36,531	15,426	24.2%
2021	63,033	11,648	36,174	15,211	24.1%
2020	62,640	11,522	36,276	14,842	23.7%
2019	62,215	11,398	36,275	14,542	23.4%
2018	61,555	11,261	36,052	14,242	23.1%
2017	60,701	11,036	35,841	13,824	22.8%
2016	59,702	10,798	35,571	13,333	22.3%
2015	58,873	10,518	35,510	12,845	21.8%
2014	58,142	10,353	35,598	12,191	21.0%
2013	57,501	10,171	35,584	11,746	20.4%
2012	56,638	9,826	35,588	11,224	19.8%
2011	55,828	9,503	35,422	10,903	19.5%
2010	54,944	9,152	35,024	10,768	19.6%
2009	54,532	9,027	35,009	10,496	19.2%
2008	54,163	8,864	35,136	10,163	18.8%
2007	53,560	8,661	34,962	9,937	18.6%
2006	52,635	8,480	34,532	9,623	18.3%