3 billion to 6 billion people projections U.S. Census Bureau World Population 1950-2050 7 billion census.gov by 2050 7 billion people by 2050 U.S. Census Bureau nine billion people International Programs nine billion people largest U.S. Census Bureau U.S. Census Bureau anticipated rapidly climbing population rates World Population Growth Rates: 1950-2050 80 million World Population Growth Rates: 1950-2050 rapidly climbing population rates increasing World Population Growth Rates: 1950-2050 9 billion before 2050 largest https://www.census.gov... U.S. Census Bureau the population U.S. Census Bureau another billion by 2030 projected nine billion people World Population Growth Rates: 1950-2050 World Population 1950-2050 nine billion people U.S. Census Bureau nine billion people U.S. Census Bureau data World Population Growth Rates: 1950-2050 U.S. Census Bureau another billion by 2030 9 billion before 2050 U.S. Census Bureau World population projections