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.
electronically and in print, in the main library.
*according to the Illustrated Almanac of Science, Technology, and Invention.