Isa (伊佐市)

City

Kagoshima (鹿児島) — 2025 — Based on Basic Resident Register

Total Population

22,748

-597 (-2.56%)

Young (0–14)

10.3%

2,339

Working Age (15–64)

46.3%

10,525

Aging Rate

43.4%

9,884

Population Trends (2009–2025)

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

Category	Total	Male	Female
Total	22,748	10,629	12,119
Young (0–14)	2,339	1,209	1,130
Working Age (15–64)	10,525	5,278	5,247
Elderly (65+)	9,884	4,142	5,742

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	22,748	2,339	10,525	9,884	43.4%
2024	23,345	2,455	10,849	10,041	43.0%
2023	23,967	2,598	11,191	10,178	42.5%
2022	24,509	2,676	11,534	10,299	42.0%
2021	25,072	2,775	11,933	10,364	41.3%
2020	25,605	2,832	12,361	10,412	40.7%
2019	26,147	2,873	12,787	10,487	40.1%
2018	26,537	2,938	13,085	10,514	39.6%
2017	27,070	2,997	13,542	10,531	38.9%
2016	27,577	3,071	13,973	10,533	38.2%
2015	28,177	3,157	14,465	10,555	37.5%
2014	28,725	3,232	14,968	10,468	36.4%
2013	28,971	3,257	15,262	10,398	35.9%
2012	29,350	3,309	15,703	10,338	35.2%
2011	29,747	3,401	16,012	10,334	34.7%
2010	30,276	3,494	16,163	10,619	35.1%
2009	30,821	3,617	16,461	10,743	34.9%