Average Police Officer Salary in Illinois

Police officers protect communities by enforcing laws, investigating crimes, responding to emergencies, and maintaining public safety. They work for municipal police departments, county sheriff's offices, state police agencies, and federal law enforcement. Beyond patrol, officers can specialize in detective divisions, SWAT, K-9, traffic enforcement, cybercrime, narcotics, and community policing. The national median annual salary is approximately $74,910, but total compensation including overtime, pension, and benefits significantly exceeds base pay in most jurisdictions.

In Illinois, police officers earn an average of $78,315 per year as of 2026, with salaries ranging from $49,041 for entry-level roles to $111,347 for the most experienced professionals — +4.5% above the national average. Pay is influenced most by department size and jurisdiction — major city and state police agencies pay the most, overtime — patrol officers in high-crime departments regularly earn 20–40% above base in ot, and the specific metro area within Illinois.