Inzai (印西市)

City

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

Total Population

111,731

+457 (0.41%)

Young (0–14)

16.5%

18,479

Working Age (15–64)

58.9%

65,861

Aging Rate

24.5%

27,391

Population Trends (1997–2025)

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

Category	Total	Male	Female
Total	111,731	55,381	56,350
Young (0–14)	18,479	9,405	9,074
Working Age (15–64)	65,861	33,030	32,831
Elderly (65+)	27,391	12,946	14,445

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	111,731	18,479	65,861	27,391	24.5%
2024	111,274	18,523	66,023	26,728	24.0%
2023	109,953	18,348	65,616	25,989	23.6%
2022	107,633	17,809	64,542	25,282	23.5%
2021	105,772	17,266	64,190	24,316	23.0%
2020	103,513	16,530	63,694	23,289	22.5%
2019	101,299	15,917	63,047	22,335	22.0%
2018	99,286	15,297	62,641	21,348	21.5%
2017	97,263	14,772	62,236	20,255	20.8%
2016	95,040	14,201	61,593	19,246	20.3%
2015	93,722	13,806	61,803	18,113	19.3%
2014	93,342	13,619	62,778	16,945	18.2%
2013	92,489	13,563	62,707	16,219	17.5%
2012	90,465	13,226	62,123	15,116	16.7%
2011	89,445	13,101	61,997	14,347	16.0%
2010	87,957	12,744	61,248	13,965	15.9%
2009	63,859	8,831	45,757	9,271	14.5%
2008	62,185	8,541	44,871	8,773	14.1%
2007	60,950	8,558	44,116	8,276	13.6%
2006	61,155	8,982	44,235	7,938	13.0%
2005	60,898	9,385	43,952	7,561	12.4%
2004	60,577	9,789	43,531	7,257	12.0%
2003	60,560	10,446	43,115	6,999	11.6%
2002	61,034	11,261	42,960	6,813	11.2%
2001	61,212	11,974	42,688	6,550	10.7%
2000	61,399	12,790	42,426	6,183	10.1%
1999	61,486	13,536	42,008	5,942	9.7%
1998	61,213	14,132	41,393	5,688	9.3%
1997	60,757	14,641	40,694	5,422	8.9%