The man's name has yet to be released, but the sheriff's department told the Victor Valley Daily Press that the 50-year-old male was "believed to be a transient."
Paramedics pronounced the man dead at the scene. Sheriff's homicide detectives are now investigating the man found dead outside the jail, according to the San Bernardino Sun.
Victorville is a sprawling exurb in the high desert, 85 miles northeast of Los Angeles. It's a land of high unemployment and high crime where local jails and the many nearby state and federal prisons are major employers.