Kasaoka (笠岡市)

City

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

Total Population

44,030

-743 (-1.66%)

Young (0–14)

9.1%

4,014

Working Age (15–64)

52.3%

23,012

Aging Rate

38.6%

17,004

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	44,030	21,241	22,789
Young (0–14)	4,014	2,057	1,957
Working Age (15–64)	23,012	11,815	11,197
Elderly (65+)	17,004	7,369	9,635

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	44,030	4,014	23,012	17,004	38.6%
2024	44,773	4,199	23,473	17,101	38.2%
2023	45,534	4,324	24,006	17,204	37.8%
2022	46,270	4,503	24,488	17,279	37.3%
2021	47,160	4,708	25,176	17,276	36.6%
2020	47,923	4,826	25,787	17,310	36.1%
2019	48,712	5,011	26,353	17,348	35.6%
2018	49,538	5,151	27,002	17,385	35.1%
2017	50,346	5,306	27,619	17,421	34.6%
2016	51,219	5,493	28,387	17,339	33.9%
2015	51,907	5,642	29,116	17,149	33.0%
2014	52,525	5,804	29,886	16,835	32.1%
2013	52,854	5,891	30,339	16,624	31.5%
2012	53,306	6,068	30,960	16,278	30.5%
2011	54,036	6,233	31,576	16,227	30.0%
2010	54,728	6,434	31,962	16,332	29.8%
2009	55,140	6,560	32,375	16,205	29.4%
2008	55,945	6,810	33,076	16,059	28.7%
2007	56,649	7,059	33,643	15,947	28.2%
2006	57,369	7,304	34,393	15,672	27.3%
2005	57,766	7,530	34,758	15,478	26.8%
2004	58,349	7,716	35,211	15,422	26.4%
2003	58,833	7,942	35,553	15,338	26.1%
2002	59,235	8,152	35,908	15,175	25.6%
2001	59,757	8,405	36,407	14,945	25.0%
2000	60,283	8,725	36,889	14,669	24.3%
1999	60,624	9,006	37,227	14,391	23.7%
1998	61,037	9,307	37,654	14,076	23.1%
1997	61,315	9,554	38,021	13,740	22.4%
1996	61,361	9,665	38,324	13,372	21.8%
1995	60,994	9,595	38,396	13,003	21.3%