Mimasaka (美作市)

City

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

Total Population

24,886

-638 (-2.50%)

Young (0–14)

8.9%

2,213

Working Age (15–64)

49.2%

12,239

Aging Rate

41.9%

10,434

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	24,886	12,052	12,834
Young (0–14)	2,213	1,128	1,085
Working Age (15–64)	12,239	6,373	5,866
Elderly (65+)	10,434	4,551	5,883

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	24,886	2,213	12,239	10,434	41.9%
2024	25,524	2,343	12,596	10,585	41.5%
2023	26,035	2,465	12,849	10,721	41.2%
2022	26,531	2,582	13,088	10,861	40.9%
2021	26,924	2,661	13,362	10,901	40.5%
2020	27,359	2,757	13,647	10,955	40.0%
2019	27,816	2,828	13,935	11,053	39.7%
2018	28,292	2,886	14,291	11,115	39.3%
2017	28,733	2,979	14,615	11,139	38.8%
2016	29,214	3,075	15,076	11,063	37.9%
2015	29,813	3,162	15,648	11,003	36.9%
2014	30,362	3,290	16,278	10,794	35.6%
2013	30,598	3,330	16,513	10,755	35.1%
2012	30,887	3,397	16,805	10,685	34.6%
2011	31,381	3,492	17,151	10,738	34.2%
2010	31,859	3,580	17,376	10,903	34.2%
2009	32,316	3,662	17,667	10,987	34.0%
2008	32,740	3,753	18,001	10,986	33.6%
2007	33,211	3,865	18,360	10,986	33.1%
2006	33,583	3,942	18,676	10,965	32.7%
2005	33,989	4,036	18,892	11,061	32.5%