St. Clair Township serves and protects their community by means of a police department, which has a sworn force of 12 police officers. They are responsible for serving and protecting residents and businesses, which encompasses 30 square miles. The Police Department operates solely on the funds generated from police levies.
The township contracts for fire protection services with the Calcutta Volunteer Fire Department and Glenmoor Volunteer Fire Department both located in the township. The fire departments have state of the art equipment and each maintains a membership of 25+ firefighters. The funds to provide fire protection services are obtained through fire levies.
The township road department consists of four employees who have the responsibility of maintaining approximately 70 miles of township roadway.
In addition to the police officers and road crew the township employs office staff to assist the police department, trustees, and fiscal officer.