Minamiboso (南房総市)

City

Chiba (千葉) — 2025 — Based on Basic Resident Register

Total Population

34,066

-749 (-2.15%)

Young (0–14)

7.1%

2,430

Working Age (15–64)

45.0%

15,313

Aging Rate

47.9%

16,323

Population Trends (2006–2025)

* Data before 2012 includes Japanese residents only (foreign residents were added to the Basic Resident Register in July 2012)

Category	Total	Male	Female
Total	34,066	16,357	17,709
Young (0–14)	2,430	1,252	1,178
Working Age (15–64)	15,313	7,820	7,493
Elderly (65+)	16,323	7,285	9,038

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	34,066	2,430	15,313	16,323	47.9%
2024	34,815	2,573	15,707	16,535	47.5%
2023	35,593	2,703	16,202	16,688	46.9%
2022	36,268	2,861	16,494	16,913	46.6%
2021	37,024	3,022	16,963	17,039	46.0%
2020	37,684	3,154	17,469	17,061	45.3%
2019	38,401	3,290	18,017	17,094	44.5%
2018	39,026	3,432	18,492	17,102	43.8%
2017	39,733	3,571	19,130	17,032	42.9%
2016	40,388	3,653	19,823	16,912	41.9%
2015	41,034	3,759	20,600	16,675	40.6%
2014	41,675	3,831	21,515	16,329	39.2%
2013	42,027	3,870	22,028	16,129	38.4%
2012	42,321	3,942	22,643	15,736	37.2%
2011	42,943	4,090	23,247	15,606	36.3%
2010	43,424	4,197	23,481	15,746	36.3%
2009	43,963	4,388	23,917	15,658	35.6%
2008	44,614	4,568	24,571	15,475	34.7%
2007	45,152	4,680	25,208	15,264	33.8%
2006	45,729	4,838	25,822	15,069	33.0%