5 Largest Economies in the World by 2100

3. United States

Estimated Share in the Global GDP (2100): 11.38%

Estimated GDP PPP (2100): $51.01 trillion

Population Forecast (2100): 394,041,000

The United States will be one of the largest countries by 2100. The country is projected to contribute 11.38% to the global economy by 2100. The country’s population will reach 394,041,000. The estimated GDP of the country will be $51.01 trillion in 2100.

You can check out 25 Richest States in America here.