Census Bureau Population Estimates: PopClocks http://www.census.gov/main/www/popclock.html Daily US and World Population Estimates from the US Census Bureau en-us None http://blogs.law.harvard.edu/tech/rss US Population Estimate: 315,911,410 at 07:49 UTC (EST+5) May 24, 2013 http://www.census.gov/population/www/popclockus.html Federal Government Statistics World Population Estimate: 7,087,200,756 at 07:49 UTC (EST+5) May 24, 2013 http://www.census.gov/cgi-bin/ipc/popclockw Federal Government Statistics