Reagan was born in Saskatoon. He studied History, Political Science, and Philosophy at the University of Saskatchewan before entering the College of law in 2019. Reagan was married to his wife Amanda, a born-and-raised Moose Javian, in 2021. Shortly after Reagan received his Juris Doctor in 2022, he and Amanda moved to Moose Jaw just in time to welcome their first child. The King's enjoy raising their growing family alongside Moose Jaw's community and look forward serving their neighbours for decades to come.

Reagan is an associate lawyer with Insight Law, focusing on civil litigation, corporate and non-profit law, real estate, and wills and estates. He and his family are proud members of St. Joseph’s Parish. Reagan is honoured to be a Board member of Hope Ministries Moose Jaw Inc. and hopes to earn the trust of individuals experiencing food/housing insecurity and community stakeholders.