Population in largest city fell 0.143% to 37.3 mil in Japan in 2021, according to the National Statistical Office.
Historically, population in largest city in Japan reached an all time high of 37.5 mil in 2018 and an all time low of 16.7 mil in 1960. When compared to Japan's main peers, population in largest city in China amounted to 27.8 mil, 12.6 mil in Russia, 9.97 mil in South Korea and 18.8 mil in USA in 2021.
Japan has been ranked 1st within the group of 153 countries we follow in terms of population in largest city.
| Population in the Largest City | Unit | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
| Canada | mil | 5.87 | 5.94 | 6.01 | 6.08 | 6.14 | ||||||||||||||||
| China | mil | 23.5 | 24.2 | 24.9 | 25.6 | 26.3 | ||||||||||||||||
| Dem. People's Republic of Korea | mil | 2.97 | 2.99 | 3.02 | 3.04 | 3.06 | ||||||||||||||||
| Germany | mil | 3.51 | 3.53 | 3.54 | 3.55 | 3.56 | ||||||||||||||||
| India | mil | 25.9 | 26.7 | 27.6 | 28.5 | 29.4 | ||||||||||||||||
| Japan | mil | 37.3 | 37.3 | 37.4 | 37.5 | 37.4 | ||||||||||||||||
| Mexico | mil | 21.3 | 21.4 | 21.5 | 21.6 | 21.7 | ||||||||||||||||
| Russia | mil | 12.0 | 12.2 | 12.3 | 12.4 | 12.5 | ||||||||||||||||
| South Korea | mil | 9.90 | 9.92 | 9.94 | 9.96 | 9.96 | ||||||||||||||||
| USA | mil | 18.6 | 18.7 | 18.8 | 18.8 | 18.8 | ||||||||||||||||
| Vietnam | mil | 7.35 | 7.60 | 7.87 | 8.15 | 8.37 |
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