Akaiwa (赤磐市)

City

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

Total Population

42,490

-483 (-1.12%)

Young (0–14)

12.7%

5,397

Working Age (15–64)

52.9%

22,486

Aging Rate

34.4%

14,606

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	42,490	20,391	22,099
Young (0–14)	5,397	2,795	2,602
Working Age (15–64)	22,486	11,169	11,317
Elderly (65+)	14,606	6,427	8,179

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	42,490	5,397	22,486	14,606	34.4%
2024	42,973	5,533	22,791	14,648	34.1%
2023	43,392	5,633	23,089	14,669	33.8%
2022	43,602	5,703	23,278	14,620	33.5%
2021	43,925	5,792	23,474	14,658	33.4%
2020	44,177	5,813	23,826	14,538	32.9%
2019	44,303	5,875	24,058	14,370	32.4%
2018	44,461	5,952	24,212	14,297	32.2%
2017	44,599	6,023	24,512	14,064	31.5%
2016	44,781	5,996	24,936	13,849	30.9%
2015	44,827	6,022	25,361	13,444	30.0%
2014	44,984	6,078	25,971	12,935	28.8%
2013	45,034	6,110	26,377	12,547	27.9%
2012	44,740	6,080	26,598	12,062	27.0%
2011	44,847	6,130	26,996	11,721	26.1%
2010	44,921	6,113	27,210	11,598	25.8%
2009	44,972	6,157	27,482	11,333	25.2%
2008	45,154	6,264	27,835	11,055	24.5%
2007	45,289	6,370	28,171	10,748	23.7%
2006	45,398	6,376	28,564	10,458	23.0%
2005	45,470	6,520	28,800	10,150	22.3%