what is the total population of the world today
World population In demographics, the world population is the total number of humans currently living, and was estimated to have reached 7.6 billion as of December 2017.[1] Estimates of the total number of humans who have ever lived range from 106 to 108 billion as of 2007.[2][3][4] Though the population is currently growing quite rapidly, future changes are influenced by difficult-to-predict factors such as economic development, cultural changes, migration, and natural disasters. Various mathematical models show that by 2100 the global population could be either rising or falling depending on how these factors affect birth and death rates.