Judge R. Erin Farrar was born and raised in Yuma County, Arizona. She graduated from Arizona State University in 2001 and obtained her law degree from the University of LaVerne in 2006.  She was in private practice from 2006 until 2012 and gained experience in family, criminal, juvenile, probate, business, personal injury, and bankruptcy law. Judge Farrar then served as an Arizona Assistant Attorney General in the Division of Child Safety and Division of Child Support Services from 2012 to 2017.

Judge Farrar was appointed Justice of the Peace Pro Tem in Yuma Justice Court in 2017, where she presided over criminal and civil proceedings. Judge Farrar was appointed to the Superior Court, Div. 2 by Governor Ducey in May 2019. In January 2021, she was appointed as Presiding Judge, Yuma Juvenile Court, by Hon. David Haws, Presiding Judge, Yuma Superior Court. She currently presides over Dependency and Delinquency cases and is a member of the Committee on Juvenile Courts.  

Judge Farrar has been involved with the Yuma County Bar Association, community events, sports activities, and dance for children. Judge Farrar and her husband, Chance, are the proud parents of five children. Judge Farrar is proud to serve on the Yuma County Superior Court bench.