High-income countries are nations characterized by highly industrialized economies; technologically advanced industrial, administrative, and service occupations; and relatively high levels of national and per capita (per person) income.
High income countries are those that has the GNP per capital that exceeds $12,056. GNP refers to the Gross National Product. This GNP is calculated by the summation of GDP to the factor incomes obtained from residents in foreign nations and subtracting income that are earned by persons of non residents of foreign nation.
High income countries will be having an environment that is highly developed in all aspects. They will be having good economic growth since they have more number of industries. They will be characterized by the high development in technology and occupations. They will be having individuals having higher per ca pita income and high national income.