Oarai (大洗町)

Town

Ibaraki (茨城) — 2025 — Based on Basic Resident Register

Total Population

15,461

-256 (-1.63%)

Young (0–14)

8.2%

1,262

Working Age (15–64)

56.9%

8,791

Aging Rate

35.0%

5,408

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	15,461	7,658	7,803
Young (0–14)	1,262	629	633
Working Age (15–64)	8,791	4,640	4,151
Elderly (65+)	5,408	2,389	3,019

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	15,461	1,262	8,791	5,408	35.0%
2024	15,717	1,336	8,939	5,442	34.6%
2023	15,932	1,396	9,051	5,485	34.4%
2022	16,094	1,481	9,117	5,496	34.1%
2021	16,464	1,586	9,415	5,463	33.2%
2020	16,712	1,626	9,646	5,440	32.6%
2019	16,914	1,704	9,803	5,407	32.0%
2018	17,203	1,775	10,047	5,381	31.3%
2017	17,404	1,845	10,206	5,353	30.8%
2016	17,552	1,883	10,412	5,257	30.0%
2015	17,870	1,977	10,740	5,153	28.8%
2014	18,095	2,041	10,998	5,056	27.9%
2013	18,272	2,128	11,195	4,949	27.1%
2012	17,776	2,056	10,881	4,839	27.2%
2011	18,138	2,125	11,203	4,810	26.5%
2010	18,322	2,133	11,361	4,828	26.4%
2009	18,457	2,160	11,487	4,810	26.1%
2008	18,604	2,219	11,648	4,737	25.5%
2007	18,908	2,311	11,885	4,712	24.9%
2006	19,116	2,333	12,173	4,610	24.1%
2005	19,267	2,369	12,355	4,543	23.6%
2004	19,420	2,402	12,516	4,502	23.2%
2003	19,580	2,456	12,663	4,461	22.8%
2002	19,746	2,505	12,857	4,384	22.2%
2001	19,946	2,603	13,034	4,309	21.6%
2000	20,056	2,688	13,163	4,205	21.0%
1999	20,109	2,765	13,273	4,071	20.2%
1998	20,275	2,865	13,421	3,989	19.7%
1997	20,403	2,930	13,524	3,949	19.4%
1996	20,571	3,039	13,739	3,793	18.4%
1995	20,640	3,138	13,771	3,731	18.1%