Otsuchi (大槌町)

Town

Iwate (岩手) — 2025 — Based on Basic Resident Register

Total Population

10,492

-217 (-2.03%)

Young (0–14)

9.4%

987

Working Age (15–64)

50.4%

5,288

Aging Rate

40.2%

4,217

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	10,492	5,012	5,480
Young (0–14)	987	514	473
Working Age (15–64)	5,288	2,682	2,606
Elderly (65+)	4,217	1,816	2,401

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	10,492	987	5,288	4,217	40.2%
2024	10,709	1,015	5,455	4,239	39.6%
2023	10,928	1,073	5,595	4,260	39.0%
2022	11,158	1,100	5,705	4,303	38.6%
2021	11,417	1,144	5,876	4,343	38.0%
2020	11,663	1,175	6,089	4,346	37.3%
2019	11,925	1,195	6,377	4,353	36.5%
2018	12,055	1,197	6,480	4,339	36.0%
2017	12,298	1,221	6,700	4,349	35.4%
2016	12,395	1,244	6,852	4,274	34.5%
2015	12,563	1,280	7,068	4,185	33.3%
2014	12,735	1,309	7,268	4,131	32.4%
2013	12,892	1,371	7,436	4,066	31.5%
2012	13,249	1,416	7,800	4,033	30.4%
2011	15,979	1,758	9,159	5,062	31.7%
2010	16,171	1,803	9,262	5,106	31.6%
2009	16,376	1,887	9,404	5,085	31.1%
2008	16,557	1,938	9,667	4,952	29.9%
2007	16,893	2,040	9,947	4,906	29.0%
2006	17,167	2,128	10,197	4,842	28.2%
2005	17,292	2,187	10,364	4,741	27.4%
2004	17,468	2,254	10,560	4,654	26.6%
2003	17,703	2,372	10,711	4,620	26.1%
2002	17,905	2,449	10,959	4,497	25.1%
2001	18,106	2,547	11,193	4,366	24.1%
2000	18,329	2,636	11,444	4,249	23.2%
1999	18,528	2,775	11,653	4,100	22.1%
1998	18,680	2,852	11,871	3,957	21.2%
1997	18,938	2,974	12,121	3,843	20.3%
1996	19,080	3,065	12,273	3,742	19.6%
1995	19,245	3,185	12,458	3,602	18.7%