The word "Zainichi" refers in general to foreign citizens residing in Japan.
For non-Korean foreigners residing in Japan, see Gaijin.
Koreans mainly live in the two Korean nation states, South Korea and North Korea (collectively referred to simply as Korea), but are also an officially recognized minority in China, Vietnam, Japan and Philippines, plus a number of former Soviet states, such as Russia and Uzbekistan.
Over the course of the 20th century, significant Korean communities have emerged in Australia, Canada, United States and, to a lesser extent, other nations with a primarily immigrant background.
By now, many people expect to walk into a beauty supply store and see a Korean store owner manning the register.