The richest country in terms of per capita income is the Arab country Qatar. Its per capita income is $88,222. Next up is Luxembourg with per capita income of $81,466. The GDP in PPP is $43.55 billion according to the World Factbook. Compared to all other countries it is in the 97th position.
United States that has the largest economy of $ 14.66 trillion is 7th place holder in per capita income which is $46,860. No wonder Switzerland, one of the most expensive countries to live in, is present as one of the richest country with per capita of $41,950.