Iwaki (いわき市)

Core City

Fukushima (福島) — 2025 — Based on Basic Resident Register

Total Population

303,171

-3,543 (-1.16%)

Young (0–14)

10.7%

32,528

Working Age (15–64)

56.7%

172,002

Aging Rate

32.5%

98,641

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	303,171	149,012	154,159
Young (0–14)	32,528	16,591	15,937
Working Age (15–64)	172,002	89,384	82,618
Elderly (65+)	98,641	43,037	55,604

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	303,171	32,528	172,002	98,641	32.5%
2024	306,714	33,445	174,657	98,612	32.2%
2023	310,890	34,646	177,567	98,677	31.7%
2022	314,913	35,773	180,199	98,941	31.4%
2021	318,490	36,771	183,183	98,536	30.9%
2020	321,535	37,695	186,082	97,758	30.4%
2019	324,246	38,606	188,764	96,876	29.9%
2018	327,090	39,426	191,840	95,824	29.3%
2017	329,938	40,084	195,247	94,607	28.7%
2016	331,920	40,793	198,107	93,020	28.0%
2015	333,802	41,639	201,063	91,100	27.3%
2014	335,488	42,399	204,417	88,672	26.4%
2013	336,525	43,159	206,128	87,238	25.9%
2012	338,139	44,285	209,250	84,604	25.0%
2011	345,670	46,902	214,212	84,556	24.5%
2010	349,181	48,197	215,780	85,204	24.4%
2009	351,756	49,502	217,933	84,321	24.0%
2008	354,364	50,626	221,120	82,618	23.3%
2007	357,026	51,549	224,219	81,258	22.8%
2006	358,847	52,474	226,923	79,450	22.1%
2005	359,876	53,257	228,887	77,732	21.6%
2004	361,204	54,009	230,623	76,572	21.2%
2003	362,589	55,050	232,066	75,473	20.8%
2002	363,526	55,994	233,863	73,669	20.3%
2001	364,240	57,078	235,140	72,022	19.8%
2000	364,914	58,176	236,685	70,053	19.2%
1999	365,531	59,522	237,714	68,295	18.7%
1998	365,761	60,561	238,610	66,590	18.2%
1997	365,245	61,427	239,496	64,322	17.6%
1996	364,704	62,238	240,281	62,185	17.1%
1995	364,091	63,159	240,904	60,028	16.5%