Average Information Security Analyst Salary in Illinois

Information security analysts plan, implement, and monitor the security measures that protect an organization's computer networks and systems from cyber threats. With the median salary around $120,360 and one of the highest projected growth rates of any occupation (32% through 2032), information security is among the most in-demand and well-compensated roles in technology. Analysts defend against data breaches, ransomware, phishing campaigns, and nation-state attacks — threats that have made cybersecurity a board-level priority for enterprises of every size.

In Illinois, information security analysts earn an average of $128,005 per year as of 2026, with salaries ranging from $83,197 for entry-level roles to $180,220 for the most experienced professionals — +6.4% above the national average. Pay is influenced most by cissp, cism, or oscp certification can add $15,000–$30,000 to base salary, industry — financial services, defense, and cloud companies pay the most; government pays less but offers stability, and the specific metro area within Illinois.