where do most of the people live in japan?
Tokyo
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 Japan 's population is estimated at around 127 million , with 80 % of the population living on Honshū . Japanese society is one of the most ethnically , linguistically and culturally homogeneous societies in the world , composed of 98 @.@ 5 % ethnic Japanese , with small populations of foreign workers . Zainichi Koreans , Chinese , Filipinos , Brazilians mostly of Japanese descent , Peruvians mostly of Japanese descent and Americans are among the small minority groups in Japan . In 2003 , there were about 134 @,@ 700 non @-@ Latin American Western ( not including more than 33 @,@ 000 American military personnel and their dependents stationed throughout the country ) and 345 @,@ 500 Latin American expatriates , 274 @,@ 700 of whom were Brazilians ( said to be primarily Japanese descendants , or nikkeijin , along with their spouses ) , the largest community of Westerners . 

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 Japan 's population is expected to drop to 95 million by 2050 ; demographers and government planners are currently in a heated debate over how to cope with this problem . Immigration and birth incentives are sometimes suggested as a solution to provide younger workers to support the nation 's aging population . Japan accepts a steady flow of 15 @,@ 000 new Japanese citizens by naturalization ( 帰化 ) per year . According to the UNHCR , in 2012 Japan accepted just 18 refugees for resettlement , while the US took in 76 @,@ 000 . 

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 About 73 percent of Japan is forested , mountainous , and unsuitable for agricultural , industrial , or residential use . As a result , the habitable zones , mainly located in coastal areas , have extremely high population densities . Japan is one of the most densely populated countries in the world . 

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 The most dominant native ethnic group is the Yamato people ; primary minority groups include the indigenous Ainu and Ryukyuan peoples , as well as social minority groups like the burakumin . There are persons of mixed ancestry incorporated among the Yamato , such as those from Ogasawara Archipelago . In 2014 , foreign @-@ born non @-@ naturalized workers made up only 1 @.@ 5 % of the total population . Japan is widely regarded as ethnically homogeneous , and does not compile ethnicity or race statistics for Japanese nationals ; however , at least one analysis describes Japan as a multiethnic society . Most Japanese continue to see Japan as a monocultural society . Former Japanese Prime Minister and current Finance Minister Tarō Asō described Japan as being a nation of " one race , one civilization , one language and one culture " , which drew criticism from representatives of ethnic minorities such as the Ainu . Unnoficial analysis put the number of mixed race Japanese citizens to be around 0 @.@ 5 % of the population . 

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 Japan has the second longest overall life expectancy at birth of any country in the world : 83 @.@ 5 years for persons born in the period 2010 – 2015 . The Japanese population is rapidly aging as a result of a post – World War II baby boom followed by a decrease in birth rates . In 2012 , about 24 @.@ 1 percent of the population was over 65 , and the proportion is projected to rise to almost 40 percent by 2050 . 
