Ibara (井原市)

City

Okayama (岡山) — 2025 — Based on Basic Resident Register

Total Population

36,670

-726 (-1.94%)

Young (0–14)

9.6%

3,524

Working Age (15–64)

52.2%

19,150

Aging Rate

38.2%

13,996

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	36,670	17,582	19,088
Young (0–14)	3,524	1,771	1,753
Working Age (15–64)	19,150	9,809	9,341
Elderly (65+)	13,996	6,002	7,994

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	36,670	3,524	19,150	13,996	38.2%
2024	37,396	3,625	19,640	14,131	37.8%
2023	38,064	3,752	20,014	14,297	37.6%
2022	38,818	3,857	20,437	14,524	37.4%
2021	39,284	3,898	20,824	14,562	37.1%
2020	39,912	4,033	21,293	14,586	36.5%
2019	40,639	4,198	21,855	14,586	35.9%
2018	41,160	4,353	22,241	14,566	35.4%
2017	41,613	4,493	22,645	14,475	34.8%
2016	42,158	4,646	23,088	14,424	34.2%
2015	42,787	4,866	23,542	14,379	33.6%
2014	43,436	5,036	24,296	14,104	32.5%
2013	43,917	5,157	24,750	14,010	31.9%
2012	43,910	5,253	24,835	13,822	31.5%
2011	44,404	5,408	25,209	13,787	31.0%
2010	44,872	5,530	25,448	13,894	31.0%
2009	45,363	5,623	25,938	13,802	30.4%
2008	45,606	5,685	26,309	13,612	29.8%
2007	45,919	5,806	26,651	13,462	29.3%
2006	46,418	5,969	27,180	13,269	28.6%
2005	46,713	6,079	27,486	13,148	28.1%
2004	35,492	4,980	21,629	8,883	25.0%
2003	35,571	5,070	21,731	8,770	24.7%
2002	35,747	5,126	22,000	8,621	24.1%
2001	35,824	5,196	22,181	8,447	23.6%
2000	35,843	5,259	22,335	8,249	23.0%
1999	35,854	5,291	22,496	8,067	22.5%
1998	35,928	5,426	22,594	7,908	22.0%
1997	36,005	5,522	22,838	7,645	21.2%
1996	36,167	5,641	23,056	7,470	20.7%
1995	36,282	5,691	23,323	7,268	20.0%