Based on a comparison of 13 countries in 2020, USA ranked the highest in obese population, measured as a share of total population with 42.8% followed by Mexico and Hungary. On the other end of the scale was Japan with 4.60%, South Korea with 5.90% and Belgium with 21.2%.
Data for more countries are available at Obese Population, Measured (As % of Total Population) indicator page.
| Obese Population, Measured (As % of Total Population) | Unit | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
| Belgium | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 18.6% | ... | ... | ... | 21.2% | ... | ... |
| Brazil | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ||||
| Canada | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | 28.1% | ... | 26.9% | ... | ... | |||||||
| Hungary | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 30.0% | ... | ... | ... | ... | ... | ||
| Ireland | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 23.0% | ... | 23.0% | ... | ... | ||
| Japan | % | 3.90% | 3.70% | 4.20% | 4.40% | 4.00% | ... | |||||||||||||||
| Latvia | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 20.6% | ... | 23.2% | ... | 24.1% | ... | ... |
| Mexico | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 33.1% | ... | 36.1% | ... | ... | ||||
| New Zealand | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | 29.9% | 30.7% | 31.6% | 32.2% | 32.2% | |||||||
| Russia | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 21.6% | ... | ... |
| South Korea | % | ... | ... | ... | ... | ... | 4.30% | 5.30% | 5.50% | 5.40% | 5.90% | ... | ||||||||||
| USA | % | ... | ... | ... | ... | ... | ... | ... | 38.2% | ... | 40.0% | ... | ... | ... | ||||||||
| United Kingdom | % | 25.6% | 26.9% | 26.2% | 28.7% | 27.7% | ... |
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