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Sex offender registry · Illinois

Sex offender registry in Illinois

Sex offender registry (NSOPW (federal deep-link)) data for ZIP codes in Illinois. Pick a ZIP below to dive into the sex offender registry summary.

Last verified 2026-05-13 · methodology

What lands here

Pages provide a clickable deep-link to search NSOPW by ZIP or address. zipradar does NOT mirror, cache, or republish any registry records — NSOPW is the sole source of truth.

Source & refresh

NSOPW (federal deep-link). Refreshed real-time (registry is the canonical source; zipradar doesn't mirror). Primary source →

Illinois top concern

Lead service lines, flooding (Mississippi/Illinois)

Illinois has the highest LCRR lead-service-line replacement obligations in the US (Chicago alone >400,000 LSLs). FEMA AE coverage extends along the Mississippi, Illinois, and Rock rivers. EPA SDWIS shows urban vs. downstate disparity.

See Illinois state page for the full state-level rollup across all 12 dimensions.

Read more on sex offender registry

Editorial deep-dives explaining the source data, its limits, and how to read it.

8 Illinois ZIPs