Gretchen B. Larson, a Colorado native, earned her undergraduate degree at Southern Methodist University in 1989 and her law degree at the University of Colorado School of Law in 1993. She was a prosecutor in the 21st Judicial District in Grand Junction from 1993 to 1999 and in the 9th Judicial District in Glenwood Springs from 1999 to 2005, then returned to the District Attorney's Office in Grand Junction in March 2005.
She was appointed to the county court bench in July 2006 and to the Twenty-First Judicial District Court by Governor Hickenlooper in November 2016. Voters retained her in 2020 with 74.82 percent of the votes cast on the question: 56,679 yes and 19,076 no.