Season Episodes Originally aired Nielsen ratings First aired Last aired Rank Viewers (in millions) 22 September 24, 2010 (2010 - 09 - 24) May 13, 2011 (2011 - 05 - 13) 19 12.58 22 September 23, 2011 (2011 - 09 - 23) May 11, 2012 (2012 - 05 - 11) 22 12.16 23 September 28, 2012 (2012 - 09 - 28) May 10, 2013 (2013 - 05 - 10) 14 13.17 22 September 27, 2013 (2013 - 09 - 27) May 9, 2014 (2014 - 05 - 09) 10 13.63 5 22 September 26, 2014 (2014 - 09 - 26) May 1, 2015 (2015 - 05 - 01) 13 13.77 6 22 September 25, 2015 (2015 - 09 - 25) May 6, 2016 (2016 - 05 - 06) 10 13.07 7 22 September 23, 2016 (2016 - 09 - 23) May 5, 2017 (2017 - 05 - 05) 8 14.07 8 22 September 29, 2017 (2017 - 09 - 29) TBA TBA TBA
how many episodes of blue bloods were there in season 7
22 22 22 22 22 22 22 22