A Western Montana native, Cliff Irwin was raised in Troy, Montana, where his family still lives. He obtained his Bachelor of Arts Degree from Western Washington University in 2002 and earned his Juris Doctorate from the University of Montana in 2006. Cliff has been in private practice in Montana since 2006. Cliff's law practice revolves around complex civil litigation. Cliff's clients include independent businesses, non-profits, individuals, and families.

Cliff Irwin is married to Lindsay Irwin (also a Western Washington University graduate) and they have two children. When he is not in his office or in any of western Montana's courthouses, you can find him whitewater rafting or running the "M" trail. Lindsay manages the Bitterroot Flower Shop, owned and operated by their family.