07/01/08 6,710,926,117 08/01/08 6,717,647,265 09/01/08 6,724,368,413 10/01/08 6,730,872,750 11/01/08 6,737,593,898 12/01/08 6,744,098,235 01/01/09 6,750,819,383 02/01/09 6,757,540,531 03/01/09 6,763,611,245 04/01/09 6,770,332,394 05/01/09 6,776,836,730 06/01/09 6,783,557,879 07/01/09 6,790,062,216
Source: U.S. Census Bureau, International Data Base.
Note: Data updated 12-15-2008 (Release notes).