Both the juvenile and adult detention homes are under new management.
The two facilities used to be operated by the Human Services department.
Under the city's new budget the office was cut, its duties were given to several different departments. Now the city police will be responsible for security at both facilities.
Danville's police chief says his officers will still be out in full force.
"It's not going to change police operations at all. We'll continue to operate as we did before. The only difference is that the directors at both detention facilities will report to the police chief instead of the human services director," said Chief of Police Philip Broadfoot.
The budget approved in June cut 45 positions, closed a branch of the city library and increased property taxes.
City council says a declining population and a small "middle class income base" is to blame.