Illinois Sex Offender Statistics (2026)
As of August 2026, we index about 44,300 sex-offender registry records in Illinois — the 4th-most of the 56 US jurisdictions, at 3.5 per 1,000 residents. These are counts of the records in our continuously updated index, rounded and dated — not Illinois’s official figures.
Illinois against the national average
Registrants we index, with the rate per 1,000 residents (2020 Census population). Neighboring jurisdictions are listed for scale; each links to its own statistics page.
| Jurisdiction | Registrants indexed (approx.) | Per 1,000 residents | Rank by count |
|---|---|---|---|
| Illinois | ≈ 44,300 | 3.5 | 4th |
| United States (all 58 registries) | ≈ 1,560,000 | 4.7 | — |
| Indiana | ≈ 14,600 | 2.2 | 16th |
| Iowa | ≈ 7,170 | 2.2 | 30th |
| Kentucky | ≈ 11,000 | 2.4 | 25th |
| Missouri | ≈ 21,500 | 3.5 | 14th |
| Wisconsin | ≈ 27,400 | 4.6 | 11th |
Cite this: ≈44,300 sex-offender registry records indexed in Illinois (3.5 per 1,000 residents) — Offendersearch, Illinois Sex Offender Statistics (August 2026). https://offendersearch.app/sex-offender-statistics/illinois#headline
Where Illinois ranks
Illinois holds the 4th-largest count of registrants we index among the 56 US jurisdictions — just behind California (≈62,900) and ahead of Michigan (≈43,300). Illinois's rate of 3.5 registrants indexed per 1,000 residents ranks 20th among the US jurisdictions with at least 1,000 indexed records, against a national average of about 4.7 per 1,000. Absolute size and per-capita rate order the states very differently — the full rankings are on the count ranking and the per-capita ranking.
Housing status (national estimate). No per-state housing figure is published here, because our housing data is a national sample estimate: across 6,668 sampled records nationwide, 5.7% of registrants with a known housing status were homeless or had no fixed address as of August 2026. That figure describes the country, not Illinois — the breakdown is on the national statistics page.
Illinois city figures
Cities where we publish a local count, largest first:
Illinois statistics, answered
How many registered sex offenders live in Illinois?
As of August 2026, we index about 44,300 sex-offender registry records in Illinois — the 4th-most of the 56 US jurisdictions. That is a count of the records in our continuously updated index, not Illinois's official figure: registries add, remove and amend records all the time, so the live answer for a specific person comes from a search, not a table.
How many sex offenders does Illinois have per capita?
About 3.5 registrants indexed per 1,000 residents, using the 2020 Census population as the denominator. Illinois's rate of 3.5 registrants indexed per 1,000 residents ranks 20th among the US jurisdictions with at least 1,000 indexed records, against a national average of about 4.7 per 1,000. A rate describes the size of a registry relative to population — jurisdictions differ in who must register, for how long, and which registrants they publish, so it is a scale comparison rather than a safety measure.
Are these Illinois's official registry numbers?
No — they are approximate counts of the registrants we index for Illinois, rounded to three significant figures and dated to August 2026. Jurisdictions count different things (people, registrations, addresses) and publish on their own terms, so no single official national table exists. For a legal or research purpose that requires Illinois's official figure, request it from the state registry authority.
Registry data is not a consumer report, and decisions made on it are regulated in that use.
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<a href="https://offendersearch.app/sex-offender-statistics/illinois"><img src="https://offendersearch.app/badge/state/il.svg" alt="Illinois registered sex offenders — Offendersearch" height="40"></a>The live answer beats the table
Statistics describe Illinois’s registry as a population; a search answers for a person — across every US registry at once. Your first 25 are free.