3 times (twice in Los Angeles and once in Squaw Valley).
Twice, in 1932 and 1984.
1932 and 1984 Summer Olympics
Taiwan, or Chinese Taipei as it is recognised by the International Olympic Committee, has never hosted the Olympics. In fact technically a country never hosts the Olympics; they are awarded to a city. So, for instance, London, of which the British are justifiably proud, has hosted the games three times, but the USA has hosted the games more times, as they have been awarded to various cities (St Louis, Los Angeles twice, Atlanta, Lake Placid twice, Squaw Valley and Salt Lake City). If the games were ever to be held in Taiwan, they would probably be awarded to Taipei, which is Taiwan's biggest city.
The United States has hosted 8 Olympic Games:1904 Summer Olympics - St. Louis1932 Winter Olympics - Lake Placid1932 Summer Olympics - Los Angeles1960 Winter Olympics - Squaw Valley1980 Winter Olympics - Lake Placid1984 Summer Olympics - Los Angeles1996 Summer Olympics - Atlanta2002 Winter Olympics - Salt Lake CityAs of the 2008 Games, the Olympics have been hosted 8 times by 6 US cities:1) St. Louis - 1904 Summer Games2) Los Angeles - 1932 and 1984 Summer Games3) Lake Placid - 1932 and 1980 Winter Games4) Squaw Valley - 1960 Winter Games5) Atlanta - 1996 Summer Games6) Salt Lake City - 2002 Winter GamesAs of the 2008 Games in Beijing, the United States has hosted 8 Olympic Games: Summer - 1904 - St. Louis 1932 - Los Angeles1984 - Los Angeles1996 - AtlantaWinter - 1932 - Lake Placid1960 - Squaw Valley1980 - Lake Placid2002 - Salt Lake City
Peru had never hosted the Olympics.
Slovakia has never hosted the Winter Olympics.
Vancouver has never hosted the Olympics before the ones they are currently holding.
Portugal has never hosted the Olympic Games.