estimated there were 5,505 wolves reports http://www.fws.gov/midwest/wolf/aboutwolves/WolfPopUS.htm Gray Wolf Population in U.S. As of April 2017, https://www.fws.gov/midwest/wolf/aboutwolves/WolfPopUS.htm https://www.fws.gov/midwest/wolf/aboutwolves/WolfPopUS.htm As of April 2017, 6,000 individuals https://www.fws.gov/midwest/wolf/aboutwolves/WolfPopUS.htm As of April 2017, estimated there were 5,505 wolves in the lower 48 states Fish and Wildlife Service As of April 2017, meager the populations It worked https://www.fws.gov/midwest/wolf/aboutwolves/WolfPopUS.htm around 3,700 wolves Fish and Wildlife Service