World's 10 Most Populous Countries 1 China 1,268,000,000 2 India 1,024,600,000 3 United States 273,500,000 4 Indonesia 214,100,000 5 Brazil 166,700,000 6 Pakistan 150,000,000 7 Russia 145,400,000 8 Japan 145,400,000 9 Nigeria 129,200,000 10 Bangladesh 128,100,000