Koto (江東区)

Special Ward

Tokyo (東京) — 2025 — Based on Basic Resident Register

Total Population

541,685

+2,577 (0.48%)

Young (0–14)

11.9%

64,616

Working Age (15–64)

67.3%

364,497

Aging Rate

20.8%

112,572

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	541,685	265,630	276,055
Young (0–14)	64,616	33,062	31,554
Working Age (15–64)	364,497	183,899	180,598
Elderly (65+)	112,572	48,669	63,903

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	541,685	64,616	364,497	112,572	20.8%
2024	539,108	65,775	360,576	112,757	20.9%
2023	532,882	66,208	354,048	112,626	21.1%
2022	525,952	66,563	346,388	113,001	21.5%
2021	526,301	67,437	346,029	112,835	21.4%
2020	521,835	66,886	342,622	112,327	21.5%
2019	518,479	66,878	339,939	111,662	21.5%
2018	513,197	66,197	336,545	110,455	21.5%
2017	506,511	65,200	332,441	108,870	21.5%
2016	501,501	64,183	330,367	106,951	21.3%
2015	493,952	62,556	327,250	104,146	21.1%
2014	487,142	60,996	325,873	100,273	20.6%
2013	481,031	59,556	324,015	97,460	20.3%
2012	456,673	55,973	308,796	91,904	20.1%
2011	452,947	54,986	308,840	89,121	19.7%
2010	447,255	53,558	305,766	87,931	19.7%
2009	441,262	52,190	303,541	85,531	19.4%
2008	432,090	50,446	299,730	81,914	19.0%
2007	424,835	48,969	296,921	78,945	18.6%
2006	418,972	47,911	295,895	75,166	17.9%
2005	407,908	45,973	290,040	71,895	17.6%
2004	398,438	44,504	285,106	68,828	17.3%
2003	391,315	43,693	281,111	66,511	17.0%
2002	383,591	42,761	277,714	63,116	16.5%
2001	376,247	42,039	274,128	60,080	16.0%
2000	372,052	42,233	273,037	56,782	15.3%
1999	366,994	42,400	270,739	53,855	14.7%
1998	363,903	42,884	269,645	51,374	14.1%
1997	360,802	43,691	268,373	48,738	13.5%
1996	359,453	44,895	267,953	46,605	13.0%
1995	363,448	47,359	271,530	44,559	12.3%