Felonies, Firearm Enhancements & Drug Weight Penalties Explained
If you are charged with a crime in Cook County, understanding sentencing exposure is critical. Whether a case is in the District 1 (Chicago) courthouse at the 2600 S. California Ave., or in suburban districts like Skokie Courthouse, Rolling Meadows Courthouse, Bridgeview Courthouse, Markham Courthouse, or Maywood Courthouse — sentencing rules come from Illinois law.
But how judges apply them in Cook County can vary based on:
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Criminal history
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Enhancements (firearms, prior felonies)
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Drug weight thresholds
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Truth-in-sentencing rules
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Local prosecutorial policies
This guide is optimized for those searching:
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Cook County criminal sentencing chart
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Illinois felony sentencing ranges
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Chicago firearm enhancement penalties
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Cook County drug weight sentencing
Statutory authority: Illinois Unified Code of Corrections
Official statutes: https://www.ilga.gov
Illinois Felony Sentencing Chart (Applied in Cook County Courts)
| Class | Prison Range | Extended Term | Probation? |
|---|---|---|---|
| Class X | 6–30 years | 30–60 years | ❌ No |
| Class 1 | 4–15 years | 15–30 years | ✅ Yes |
| Class 2 | 3–7 years | 7–14 years | ✅ Yes |
| Class 3 | 2–5 years | 5–10 years | ✅ Yes |
| Class 4 | 1–3 years | 3–6 years | ✅ Yes |
Important for Cook County Defendants
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Class X charges in Cook County mean mandatory prison
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Extended term exposure increases dramatically with prior felonies
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Some offenses eliminate probation entirely
Common Cook County felony charges:
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Gun possession (UUW / AUUW)
Cook County Misdemeanor Sentencing
| Class | Jail | Fine |
|---|---|---|
| Class A | Up to 364 days | Up to $2,500 |
| Class B | Up to 180 days | Up to $1,500 |
| Class C | Up to 30 days | Up to $1,500 |
Example: First DUI = Class A misdemeanor.
Firearm Enhancements in Cook County Cases
Firearm enhancements can turn a manageable case into a decades-long sentence.
Common enhancements under Illinois law:
| Conduct | Enhancement Added |
|---|---|
| Armed with firearm | +15 years |
| Discharged firearm | +20 years |
| Discharge causing great bodily harm or death | +25 years to natural life |
Why This Matters in Chicago Gun Cases
Many Cook County gun cases start as Class X felonies.
Example:
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Base Class X = 6–30 years
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Add firearm possession = 6 + 15 = 21-year minimum
Enhancements are mandatory and consecutive.
If you are searching:
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Chicago gun charge sentencing
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Cook County firearm enhancement penalties
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UUW sentencing Illinois
This is where exposure changes dramatically.
Cook County Drug Weight Sentencing Chart
Drug sentencing in Illinois depends heavily on weight.
Cocaine / Heroin (Delivery or Possession with Intent)
| Weight | Charge Level |
|---|---|
| 1g–14g | Class 1 Felony |
| 15g–99g | Class X Felony |
| 100g–399g | Class X (higher sentencing range) |
| 400g–899g | Class X (extended exposure) |
| 900g+ | 15–60 years minimum range |
Cannabis, fentanyl, methamphetamine, and delivery cases have separate statutes and ranges.
Why Weight Is Critical
The difference between:
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14 grams and 15 grams
can mean the difference between probation eligibility and mandatory prison.
Cook County prosecutors often rely heavily on certified lab weights.
Truth-in-Sentencing (Cook County Impact)
Certain violent offenses require:
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85% of sentence served
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75% for some crimes
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50% for others
This means a 20-year sentence could mean 17 actual years served.
Mandatory Supervised Release (MSR)
After prison:
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Class X → 3 years MSR
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Class 1 & 2 → 2 years MSR
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Class 3 & 4 → 1 year MSR
MSR operates like parole supervision after release from the Illinois Department of Corrections.
Extended Term Sentencing in Cook County
Extended term may apply if:
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Prior same or greater felony within 10 years
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Brutal or heinous conduct
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Protected victim (elderly, disabled, child)
Extended term doubles potential exposure.
How Sentencing Is Evaluated in a Cook County Criminal Case
When analyzing exposure, determine:
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Offense class
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Probation eligibility
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Firearm enhancement?
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Drug weight tier?
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Truth-in-sentencing requirement?
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Extended-term eligibility?
That gives true risk assessment.
Frequently Searched Cook County Sentencing Questions
What is the minimum sentence for a Class X felony in Cook County?
6 years (before enhancements).
Can you get probation for a Class 1 felony in Illinois?
Yes — unless statute prohibits it.
How much time do you serve on a 10-year sentence in Illinois?
Often 85%, depending on the offense.
What is the penalty for gun possession in Chicago?
Ranges from Class 4 to Class X depending on circumstances and prior history.
Why This Matters for Cook County Defendants
Sentencing exposure determines:
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Plea strategy
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Trial risk evaluation
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Negotiation leverage
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Long-term consequences
A case that looks like “6 years” on paper may actually be:
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21 years with enhancement
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85% served
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Plus 3 years MSR
Understanding the math changes everything.
