G7 population by country 2023

The United States had the largest population of the G7 countries between 2000 and 2023, increasing from 282 million to 335 million. It is also the country with the third highest number of inhabitants in the world. Interestingly, Japan's population has been in decline since 2010, falling from 128 million to 124.5 million. Also Italy's population has been decreasing in recent years.

Aging population

Both Italy, Germany, and Japan are characterized by an increasingly aging population. In 2023, Japan had the third highest median age worldwide, while Italy and Germany had the fourth and eighth highest, respectively. Despite Germany's high median age and aging population, the number of inhabitants continue to increase because of migration.

Falling fertility rates

Another reason for the declining populations in Japan and Italy are falling fertility rates. Both countries were among the 20 with the lowest fertility rates in the world in 2024, meaning that women in child-bearing age have fewer children.

Number of inhabitants in G7 countries from 2000 to 2023, by country (in millions)

Characteristic	Canada	France	Germany	Italy	Japan	United Kingdom	United States
2023	40.1	68.17	84.48	58.76	124.52	68.35	334.91
2022	38.94	67.97	83.8	58.94	125.12	67.79	333.27
2021	38.24	67.76	83.2	59.13	125.68	67.03	332.05
2020	38.03	67.57	83.16	59.44	126.26	67.08	331.53
2019	37.62	67.39	83.09	59.73	126.63	66.84	328.33
2018	37.07	67.16	82.91	60.42	126.81	66.46	326.84
2017	36.55	66.92	82.66	60.54	126.97	66.06	325.12
2016	36.11	66.72	82.35	60.63	127.08	65.61	323.07
2015	35.7	66.55	81.69	60.73	127.14	65.12	320.74
2014	35.43	66.31	80.98	60.79	127.28	64.6	318.39
2013	35.08	66	80.65	60.23	127.45	64.13	316.06
2012	34.71	65.66	80.43	59.54	127.63	63.7	313.88
2011	34.34	65.35	80.27	59.38	127.83	63.26	311.58
2010	34	65.03	81.78	59.28	128.07	62.77	309.33
2009	33.63	64.71	81.9	59.1	128.05	62.28	306.77
2008	33.25	64.38	82.11	58.83	128.06	61.81	304.09
2007	32.89	64.02	82.27	58.44	128	61.32	301.23
2006	32.57	63.63	82.38	58.14	127.85	60.85	298.38
2005	32.24	63.19	82.47	57.97	127.77	60.4	295.52
2004	31.94	62.72	82.52	57.69	127.76	59.99	292.81
2003	31.64	62.26	82.53	57.31	127.72	59.65	290.11
2002	31.36	61.82	82.49	57.06	127.45	59.37	287.63
2001	31.02	61.37	82.35	56.97	127.15	59.12	284.97
2000	30.69	60.92	82.21	56.94	126.84	58.89	282.16