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Illinois Sex Offender Information

This page provides an overview of registered sex offender data for Illinois, including statewide totals, density metrics, and ZIP Code-level breakdowns. Data is drawn from publicly available state registry records and U.S. Census Bureau population estimates.

Note: This page is for informational purposes only. It does not represent real-time data or provide individual-level registry records. Visit the official Illinois State Police Sex Offender Registry for official records.

Illinois Registry at a Glance

25,467

Total Listings

12.7M

State Population

200.6

Per 100k Residents

0.85×

vs. U.S. Average

Population source: ACS 2019–2023 5-year estimates. U.S. average: 237.2 per 100k.

Top 10 ZIP Codes by Total Registry Listings

The following ZIP Codes have the highest number of registered sex offender listings in Illinois.

RankZIP CodeRegistered Offenders
100000*535
260628391
360621281
460617253
562703249
660619235
760085231
861554196
961101191
1061832190

*ZIP Code 00000 is a placeholder used when address data is unavailable or redacted.

Top 10 ZIP Codes by Registry Listing Density (per 100,000 residents)

Density rankings exclude ZIP Codes with population under 1,000 to avoid unstable per-capita rates.

RankZIP CodeOffendersPopulationDensity per 100k
162701441,2113,633.4
260958221,4881,478.5
362205695,7601,197.9
462203615,5391,101.3
562204504,8241,036.5
66062128127,3181,028.6
761913121,1921,006.7
86160315315,430991.6
96110119119,671971.0
1062018283,006931.5

Population source: ACS 2019–2023 5-year ZCTA estimates (B01003).

Search Illinois Registry Records

Use KidsLiveSafe to search for registered sex offenders near any Illinois address with interactive maps and automated alerts.

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How Sex Offender Registration Works in Illinois

Illinois requires individuals convicted of certain sex offenses to register with local law enforcement. The Illinois Sex Offender Registration Act establishes requirements including:

  • Registration within 3 days of establishing residence
  • Annual verification of address and personal information
  • Notification of address changes within 3 days
  • Registration duration based on offense classification (10 years to lifetime)

The Illinois State Police maintains the statewide registry database, which is publicly accessible through their official website. Local law enforcement agencies handle in-person registration.

Frequently Asked Questions

Where can I find official Illinois sex offender records?

The official Illinois sex offender registry is maintained by the Illinois State Police and available at isp.illinois.gov/Sor. This database includes all registered offenders in the state.

Why does ZIP Code 00000 appear in the data?

ZIP Code 00000 is a placeholder used when an offender's address is unavailable, redacted, or when the individual is incarcerated, homeless, or otherwise lacks a standard residential address.

How often is this data updated?

The statistics on this page are based on periodic snapshots of public registry data. For real-time information, visit the official Illinois State Police registry or use KidsLiveSafe's monitoring tools for automated updates.

By: KidsLiveSafe Research Team

Reviewed by: Compliance Lead

Sources: ISP, NSOPW

Last updated: January 2026

Methodology: Illinois registry data sourced from ISP and cross-referenced with NSOPW records.

Resources

Parent GuideA complete guide to child safety for parents and caregivers
  • Registered Sex Offenders
  • Megan's Law
  • National Sex Offender Registry
  • How to Find Sex Offenders
  • Sex Offenders by ZIP Code
  • Sex Offender Map
  • Sex Offender Registry Comparison
  • Family Safety Resources
  • Sex Offender Registry FAQs

Data Studies

  • The Aging of the Registered-Offender Population in the United States
  • Victim Age Context in Registered-Offender Convictions (United States)
  • State-Level Race/Ethnicity Representation on Registered-Offender Registries (Exploratory, 50 States)
  • The 2026 Summer Digital Exposure Index: An Analysis of Seasonal Minor Screen Spikes
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