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Illinois Drug Possession Law

Illinois Drug Possession Defense

What you're facing under 720 ILCS 570/402, how the penalties scale, and the questions your attorney needs to answer, specific to Illinois (IL) law.

Offense Class

Class 4 Felony (small amounts); up to Class X Felony (large amounts)

Maximum Penalty

1 to 3 years (Class 4); 6 to 30 years (Class X)

Maximum Fine

$25,000

Mandatory Minimum

Illinois imposes a mandatory minimum of 6 years for 100 to 400g Class X amounts for this charge. Charge reductions or alternative sentencing are questions worth raising before the plea is entered.

Penalty Range in Illinois

Statute720 ILCS 570/402 — Possession of Controlled Substance
Minimum Penalty
Maximum Penalty1 to 3 years (Class 4); 6 to 30 years (Class X)
Maximum Fine$25,000

Charge Enhancements

These factors can elevate the charge or penalty in Illinois:

  • Class 1 Felony: heroin, cocaine, or opioids 15+ grams
  • Class X Felony: heroin or cocaine 100+ grams (mandatory 6 to 30 years)
  • Enhanced if possession within 1,000 feet of school

Illinois-Specific Detail

Illinois removed cannabis possession from this statute for amounts under 30g. See 720 ILCS 550/4 for cannabis.

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Drug Possession Defense Playbook$127

26 questions that change how the next attorney meeting goes, a case stage roadmap, red flag checklist, and a case progress scorecard. Instant PDF download, relevant to Illinois defendants.

Important: This page provides legal INFORMATION about Illinois drug possession law as of the date of publication. Laws change frequently. This is not legal advice. The analysis draws on methods developed by defense attorneys, applied to public data. Your attorney remains the final authority on defense direction.