Saku (佐久市)

City

Nagano (長野) — 2025 — Based on Basic Resident Register

Total Population

97,380

-296 (-0.30%)

Young (0–14)

12.2%

11,893

Working Age (15–64)

56.4%

54,877

Aging Rate

31.4%

30,610

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	97,380	47,853	49,527
Young (0–14)	11,893	6,071	5,822
Working Age (15–64)	54,877	28,065	26,812
Elderly (65+)	30,610	13,717	16,893

Year	Total Population	0–14	15–64	65+	Aging Rate
2025	97,380	11,893	54,877	30,610	31.4%
2024	97,676	12,096	55,044	30,536	31.3%
2023	98,198	12,278	55,460	30,460	31.0%
2022	98,439	12,369	55,638	30,432	30.9%
2021	98,661	12,507	55,940	30,214	30.6%
2020	98,921	12,543	56,443	29,935	30.3%
2019	99,219	12,718	56,910	29,591	29.8%
2018	99,341	12,889	57,105	29,347	29.5%
2017	99,497	12,993	57,598	28,906	29.1%
2016	99,736	13,163	58,156	28,417	28.5%
2015	99,919	13,332	58,811	27,776	27.8%
2014	100,166	13,474	59,650	27,042	27.0%
2013	100,200	13,646	59,894	26,660	26.6%
2012	99,379	13,816	59,615	25,948	26.1%
2011	99,699	14,025	59,933	25,741	25.8%
2010	99,830	14,255	59,845	25,730	25.8%
2009	99,659	14,336	59,931	25,392	25.5%
2008	99,714	14,483	60,266	24,965	25.0%
2007	99,815	14,672	60,410	24,733	24.8%
2006	100,180	14,888	60,936	24,356	24.3%
2005	67,629	10,745	41,900	14,984	22.2%
2004	67,529	10,831	41,856	14,842	22.0%
2003	67,025	10,769	41,607	14,649	21.9%
2002	66,569	10,835	41,343	14,391	21.6%
2001	66,186	10,858	41,223	14,105	21.3%
2000	65,704	10,938	40,946	13,820	21.0%
1999	65,211	10,980	40,692	13,539	20.8%
1998	64,862	11,086	40,473	13,303	20.5%
1997	64,567	11,216	40,514	12,837	19.9%
1996	63,925	12,002	40,271	11,652	18.2%
1995	63,387	11,215	40,063	12,109	19.1%