Season Episodes Originally aired First aired Last aired 13 September 12, 2014 (2014 - 09 - 12) December 5, 2014 (2014 - 12 - 05) 15 September 11, 2015 (2015 - 09 - 11) December 18, 2015 (2015 - 12 - 18) 15 September 16, 2016 (2016 - 09 - 16) December 16, 2016 (2016 - 12 - 16) 13 September 29, 2017 (2017 - 09 - 29) December 15, 2017 (2017 - 12 - 15)
when did z nation season 4 come out
September 29, 2017