Census Bureau Population Estimates: PopClocks https://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: 316,158,691 at 23:59 UTC (EST+5) Jun 30, 2015 https://www.census.gov/population/www/popclockus.html Federal Government Statistics World Population Estimate: 7,250,104,511 at 23:59 UTC (EST+5) Jun 30, 2015 https://www.census.gov/cgi-bin/ipc/popclockw Federal Government Statistics