Illinois

Visitors must register within about 3 days, or are publicly listed long after leaving.

Visitors register after3 days or less

Illinois requires registration in person within 3 days once someone stays at an Illinois address for 3 or more aggregate days in a calendar year. Registration is with the local police chief, Chicago's designated location, or the county sheriff, with a $100 fee unless waived. Separate thresholds apply for work and school, and school, park, and bus-stop presence limits may apply to child sex offenders.

Registering as a visitor

When it's required

After 3 days, counted in total over a calendar year.

Deadline

Register in person within 3 days of establishing a residence or temporary domicile (3 or more aggregate days at a place in a calendar year); $100 initial fee unless waived; proof of the registering address required.

Where

Chief of police of the municipality; in Chicago, a location designated by the Superintendent of the Chicago Police Department; county sheriff if unincorporated or no police chief; also campus public safety/security director if attending or working at a higher education institution.

Also required if

Out-of-state employee: working in Illinois, paid or unpaid, 10 or more days or an aggregate of 30 or more days in a calendar year; drivers accrue a day for any portion of a day in the state
Out-of-state student: enrolled full- or part-time in any Illinois educational institution, no day threshold; register in person within 3 days of beginning school or employment
No fixed address: report weekly in person to the sheriff or chief of police where located
Change of employment must be reported in person within 3 days, including each work location

Public registry

The law doesn't clearly say whether visitors appear on the public registry.

The registration statute read (730 ILCS 150/3) does not address web publication. Whether a visitor/temporary registrant appears on the Illinois State Police public registry, and for how long after departure, was not verified from an official source.

Places registrants can't go

School bus stopsUnverified: reportedly unlawful to knowingly be present within 100 feet of a posted school bus pick-up or discharge stop when one or more persons under 18 are present (720 ILCS 5/11-9.3(a-5)).Applies to: "Child sex offenders" as defined in 720 ILCS 5/11-9.3(d); definition not read
Public parks, park buildings, playgrounds, recreation areasUnverified: reportedly unlawful to knowingly be present when persons under 18 are present and to approach, contact, or communicate with a child under 18, unless the offender is the parent or guardian of a minor present (720 ILCS 5/11-9.3(a-10)); see also 720 ILCS 5/11-9.4-1.Applies to: Child sex offenders / sex offenders under the cited sections; text not verified
SchoolsUnverified: reportedly unlawful to knowingly loiter within 500 feet of a school building or school property while persons under 18 are present (720 ILCS 5/11-9.3(b)); People v. Howard, 2017 IL 120443 read "loiters" broadly, rejecting a legitimate-purpose defense.Applies to: Child sex offenders as defined in 720 ILCS 5/11-9.3(d)

Laws cited

730 ILCS 150/1 to 150/3 (Sex Offender Registration Act) · Illinois General Assembly

Last checked September 19, 2026 · full review September 19, 2026

Research notes

Only the Sex Offender Registration Act text was read on an official site. Presence restrictions (720 ILCS 5/11-9.3, 5/11-9.4-1) and public listing rules (730 ILCS 152/) were not verified; the 11-9.3 text may have been amended around July 1, 2025. The definition of "child sex offender" in 11-9.3(d), including whether out-of-state convictions count, was not read. Section 2(E-10) labels a person required to register in another state a "sexual predator" in Illinois. Local ordinances, including Chicago's, are not covered. Not legal advice.

Common questions

Do registered sex offenders have to register when visiting Illinois?

Visitors must register after 3 days, counted in total over a calendar year. Register in person within 3 days of establishing a residence or temporary domicile (3 or more aggregate days at a place in a calendar year); $100 initial fee unless waived; proof of the registering address required.

Will a visiting registrant appear on Illinois's public registry?

Illinois's law doesn't clearly say whether visitors appear on the public registry.

Are there places registrants can't go in Illinois?

The state restricts registrants from: school bus stops; public parks, park buildings, playgrounds, recreation areas; schools. Details and who they apply to are listed on this page.

General information, not legal advice. Laws change and local rules may add requirements. Confirm with the state registry agency or an attorney before you travel.