45 years = 114,801,000 more people in USA

On this date in 1967, just a few minutes after 11am, the U.S. Department of Commerce Census Clock passed 200 million.*  Population growth has slowed worldwide since the peak of the 1970s, but is still galloping along.  Now, exactly 45 years after passing the 200 million mark, the U.S. resident population is nearly 314,801,000.  World population long ago exceeded the 6 billion mark and is projected to surpass 9 billion by 2050.

This is a pivotal moment, according to the authors of a book with that title.  "A difference in fertility of a single child per woman’s lifetime between now and 2050 alters the projection by 3 billion, a difference equal to the entire world population in 1960." [p 29]  A Pivotal Moment : Population, Justice, and the Environmental Challenge is available electronically and in print, in the main library.

*according to the Illustrated Almanac of Science, Technology, and Invention.