Westerkamp is the son of Robert and Kimberly Westerkamp and was born on June 23, 1994. His father also starred at Montini Catholic and collegiately at Illinois. Westerkamp is a management major and has earned a spot on the Nebraska Scholar-Athlete Honor Roll five times. Westerkamp has twice been named to both the Brook Berringer and Tom Osborne Citizenship teams. Westerkamp has volunteered for numerous outreach events, including Uplifting Athletes, Husker Hotline, NFL Fuel Up to Play 60, and School is Cool Week.