Tomioka (富岡市)

City

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

Total Population

45,172

-690 (-1.50%)

Young (0–14)

9.4%

4,234

Working Age (15–64)

55.1%

24,872

Aging Rate

35.6%

16,066

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	45,172	22,368	22,804
Young (0–14)	4,234	2,164	2,070
Working Age (15–64)	24,872	12,841	12,031
Elderly (65+)	16,066	7,363	8,703

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	45,172	4,234	24,872	16,066	35.6%
2024	45,862	4,460	25,305	16,097	35.1%
2023	46,427	4,670	25,702	16,055	34.6%
2022	47,021	4,851	26,110	16,060	34.2%
2021	47,756	5,112	26,678	15,966	33.4%
2020	48,276	5,303	27,125	15,848	32.8%
2019	48,910	5,531	27,690	15,689	32.1%
2018	49,462	5,764	28,206	15,492	31.3%
2017	49,863	5,903	28,743	15,217	30.5%
2016	50,425	6,094	29,302	15,029	29.8%
2015	50,899	6,281	29,942	14,676	28.8%
2014	51,374	6,417	30,702	14,255	27.7%
2013	51,724	6,546	31,172	14,006	27.1%
2012	51,690	6,658	31,421	13,611	26.3%
2011	52,134	6,834	31,904	13,396	25.7%
2010	52,677	7,010	32,208	13,459	25.6%
2009	53,025	7,104	32,541	13,380	25.2%
2008	53,405	7,244	33,024	13,137	24.6%
2007	53,719	7,370	33,468	12,881	24.0%
2006	53,995	7,499	33,930	12,566	23.3%
2005	49,272	7,034	31,281	10,957	22.2%
2004	49,458	7,180	31,461	10,817	21.9%
2003	49,556	7,289	31,641	10,626	21.4%
2002	49,732	7,388	31,951	10,393	20.9%
2001	49,721	7,502	32,058	10,161	20.4%
2000	49,709	7,657	32,157	9,895	19.9%
1999	49,890	7,830	32,450	9,610	19.3%
1998	49,765	7,932	32,463	9,370	18.8%
1997	49,663	8,031	32,547	9,085	18.3%
1996	49,504	8,159	32,562	8,783	17.7%
1995	49,443	8,301	32,651	8,491	17.2%