About 88% of the world's population lives north of the equator. One reason for this is that there is more landmass north of the equator and more water south of the equator. However the north of the planet has only around 68% of the world's landmass. This means that nearly 90% of the world's population is squeezed into the 68% of the world's landmass north of the equator.
You can see where the world's population lives in terms of latitude and longitude on Engaging Data's World Population Distribution by Latitude and Longitude. This map shows the distribution of the world's population as a population grid. The map also includes two buttons which allow you to reorganize the population data. One button redistributes the world's population into a graph showing the population distribution by longitude. The other button organizes the population data into a graph showing the world's population distributed by latitude.
You can also see the distribution of the world's population by longitude and latitude on Andre Andersen's World Population Map. This population density map includes two graphs views which show the distribution of the world's population by latitude and longitude.
Both these maps reveal that a huge percentage of the world's population not only lives north of the equator but also lives in a narrow vertical band east of Delhi and west of China's east coast. That is between longitude 72 E and longitude 123 E. Or in other words a huge percentage of the world's population lives in India and China.
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