Aki (安芸市)

City

Kochi (高知) — 2025 — Based on Basic Resident Register

Total Population

15,555

-345 (-2.17%)

Young (0–14)

8.0%

1,246

Working Age (15–64)

49.5%

7,702

Aging Rate

42.5%

6,607

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	15,555	7,414	8,141
Young (0–14)	1,246	625	621
Working Age (15–64)	7,702	4,006	3,696
Elderly (65+)	6,607	2,783	3,824

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	15,555	1,246	7,702	6,607	42.5%
2024	15,900	1,299	7,910	6,691	42.1%
2023	16,235	1,362	8,123	6,750	41.6%
2022	16,592	1,438	8,300	6,854	41.3%
2021	16,869	1,511	8,501	6,857	40.6%
2020	17,133	1,576	8,703	6,854	40.0%
2019	17,426	1,641	8,905	6,880	39.5%
2018	17,736	1,712	9,113	6,871	38.7%
2017	17,944	1,747	9,327	6,833	38.1%
2016	18,259	1,822	9,650	6,746	36.9%
2015	18,655	1,902	10,042	6,671	35.8%
2014	19,028	1,986	10,484	6,524	34.3%
2013	19,135	2,037	10,622	6,447	33.7%
2012	19,377	2,066	10,974	6,337	32.7%
2011	19,642	2,102	11,305	6,235	31.7%
2010	19,899	2,149	11,477	6,273	31.5%
2009	20,135	2,229	11,641	6,265	31.1%
2008	20,392	2,293	11,944	6,155	30.2%
2007	20,767	2,411	12,237	6,119	29.5%
2006	21,107	2,463	12,582	6,062	28.7%
2005	21,248	2,503	12,741	6,004	28.3%
2004	21,481	2,564	12,989	5,928	27.6%
2003	21,739	2,690	13,184	5,865	27.0%
2002	21,886	2,738	13,387	5,761	26.3%
2001	22,021	2,760	13,562	5,699	25.9%
2000	22,179	2,862	13,741	5,576	25.1%
1999	22,351	2,959	13,903	5,489	24.6%
1998	22,518	3,045	14,053	5,420	24.1%
1997	22,707	3,159	14,234	5,314	23.4%
1996	23,079	3,315	14,543	5,221	22.6%
1995	23,265	3,414	14,771	5,080	21.8%