Oizumi (大泉町)

Town

Gunma (群馬) — 2025 — Based on Basic Resident Register

Total Population

41,653

+188 (0.45%)

Young (0–14)

11.5%

4,780

Working Age (15–64)

64.8%

26,988

Aging Rate

23.7%

9,885

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	41,653	21,792	19,861
Young (0–14)	4,780	2,446	2,334
Working Age (15–64)	26,988	14,831	12,157
Elderly (65+)	9,885	4,515	5,370

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	41,653	4,780	26,988	9,885	23.7%
2024	41,465	4,918	26,676	9,871	23.8%
2023	41,729	5,087	26,913	9,729	23.3%
2022	41,658	5,173	26,798	9,687	23.3%
2021	41,718	5,233	26,921	9,564	22.9%
2020	41,987	5,377	27,244	9,366	22.3%
2019	41,785	5,391	27,240	9,154	21.9%
2018	41,876	5,316	27,588	8,972	21.4%
2017	41,568	5,382	27,407	8,779	21.1%
2016	41,226	5,472	27,250	8,504	20.6%
2015	40,931	5,518	27,169	8,244	20.1%
2014	40,759	5,503	27,334	7,922	19.4%
2013	40,681	5,568	27,440	7,673	18.9%
2012	34,692	4,585	23,012	7,095	20.5%
2011	34,817	4,685	23,335	6,797	19.5%
2010	34,925	4,715	23,564	6,646	19.0%
2009	35,056	4,837	23,815	6,404	18.3%
2008	35,235	4,949	24,184	6,102	17.3%
2007	35,295	5,031	24,418	5,846	16.6%
2006	35,489	5,154	24,772	5,563	15.7%
2005	35,735	5,275	25,096	5,364	15.0%
2004	35,998	5,438	25,376	5,184	14.4%
2003	36,239	5,597	25,605	5,037	13.9%
2002	36,200	5,654	25,684	4,862	13.4%
2001	36,762	5,811	26,215	4,736	12.9%
2000	36,995	5,934	26,497	4,564	12.3%
1999	36,992	6,099	26,479	4,414	11.9%
1998	36,980	6,257	26,411	4,312	11.7%
1997	37,208	6,436	26,600	4,172	11.2%
1996	37,820	6,688	27,095	4,037	10.7%
1995	38,204	6,919	27,395	3,890	10.2%