Aso (阿蘇市)

City

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

Total Population

24,170

-356 (-1.45%)

Young (0–14)

10.3%

2,478

Working Age (15–64)

49.6%

11,981

Aging Rate

40.2%

9,711

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	24,170	11,432	12,738
Young (0–14)	2,478	1,312	1,166
Working Age (15–64)	11,981	5,958	6,023
Elderly (65+)	9,711	4,162	5,549

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	24,170	2,478	11,981	9,711	40.2%
2024	24,526	2,595	12,179	9,752	39.8%
2023	24,751	2,652	12,308	9,791	39.6%
2022	25,213	2,748	12,536	9,929	39.4%
2021	25,484	2,808	12,779	9,897	38.8%
2020	25,924	2,876	13,232	9,816	37.9%
2019	26,433	3,011	13,646	9,776	37.0%
2018	26,773	3,091	13,948	9,734	36.4%
2017	27,204	3,192	14,404	9,608	35.3%
2016	27,618	3,294	14,850	9,474	34.3%
2015	27,865	3,301	15,242	9,322	33.5%
2014	28,169	3,351	15,721	9,097	32.3%
2013	28,244	3,363	15,918	8,963	31.7%
2012	28,458	3,416	16,185	8,857	31.1%
2011	28,688	3,453	16,442	8,793	30.7%
2010	29,000	3,499	16,660	8,841	30.5%
2009	29,336	3,593	16,920	8,823	30.1%
2008	29,547	3,663	17,091	8,793	29.8%
2007	29,768	3,718	17,296	8,754	29.4%
2006	30,087	3,858	17,582	8,647	28.7%
2005	30,154	3,958	17,669	8,527	28.3%