300 Million

The USA hit a population of 300 million. The world's population is growing very quickly and this can be monitored at Measurements on a Global Level. Also check out what NPR and the BBC have to say about America's population milestone.

"Fueled by an estimated net gain of one person every 11 seconds, America -- the world's third most populous country -- joined China and India with populations greater than 300 million."
- CNN.com