Illinois Apostille Guide — How to Authenticate Documents

Who issues Illinois apostilles?

The Illinois Secretary of State Index Department issues apostilles for Hague Convention countries and certificates of authority for non-Hague destinations. The office authenticates signatures of Illinois public officials or Illinois Notary Publics on documents to be used outside the United States. Vital records, court documents, school transcripts/diplomas, corporate filings (such as certificates of good standing), and certain notarized papers are common. Always confirm the receiving country accepts apostilles and that your document is an Illinois-origin certified copy or properly prepared Illinois-notarized original—out-of-state notarizations must go to that other state’s Secretary of State. Notarized private documents often need county clerk authentication of the notary’s commission before the Index Department will apostille them—verify current Index Department guidance for your document type.

Typical steps

1) Obtain a properly certified copy from the correct Illinois issuer (county clerk / vital records for birth-marriage-death certificates, clerk of court, school registrar, Illinois SOS Business Services for corporate records, etc.), or prepare an original notarized by an Illinois Notary Public and complete any required county clerk authentication of that notary. 2) Complete the Application for Authentication (Form I-213 / current Index Department form on the SOS site) and name the destination country so the office can issue an apostille or certificate of authority as appropriate. 3) Submit the form, original document(s), payment, and a self-addressed stamped return envelope (or prepaid tracked label) by mail to the Index Department, or walk in to a Chicago or Springfield Index counter when offered. 4) Receive the apostille (or certificate) attached to your document; without a prepaid return label, mail returns are typically first-class.

Walk-in vs mail vs courier

Walk-in service is commonly available at Index Department counters in Chicago and Springfield on a first-come, first-served basis; in most cases documents are processed while you wait, subject to daily volume—confirm current lobby hours and which office accepts walk-ins before you travel. Mail-in DIY is usually cheapest if you have buffer for transit plus the published 7–14 business day processing window; include a self-addressed stamped envelope or prepaid tracked label. Mail requests are typically directed to the Index Department’s Chicago mailing address (verify the current suite on ilsos.gov before shipping originals). Couriers help with multi-document batches, travelers who cannot wait on mail, same-day walk-in hand-carry in Chicago or Springfield, or packages that also need county clerk notary authentication and vital-record certified copies before the SOS filing.

Fee and timeline estimates

Treat figures as estimates and verify on the official Illinois Secretary of State apostille page before you ship originals. The Index Department fee has been published at $2.00 per document for an apostille or certificate of authority (one check or money order payable to “Illinois Secretary of State” for the total—credit cards and cash are typically not accepted for this service). Mail requests are commonly quoted at about 7–14 business days of processing after receipt, plus transit both ways. Walk-in is often same-day while you wait when volume allows. Budget separately for certified-copy fees from the issuing agency, any county clerk notary-authentication fee, the $2 SOS fee per document, courier service if used, and tracked shipping. Fees, forms, and addresses can change—confirm on ilsos.gov (Index Department / Apostilles and Certifications).

When an expedited courier helps

Illinois does not publish a separate state rush fee that shortens the official mail processing clock; speed comes from walk-in same-day service, a courier who can hand-carry Chicago or Springfield drop-off, or prepaid overnight return on mail packages. Couriers are most useful for embassy or consular deadlines, overseas employment or school start dates, adoption timelines, multi-document corporate packages, and out-of-area clients who cannot travel to Chicago or Springfield. Compare turnaround quotes, insurance for originals, and whether they can also coordinate county clerk notary authentication and Illinois certified copies before filing.

Expedited courier options (Illinois)

All listings below are EXAMPLE placeholders — not real companies or phone numbers.

• EXAMPLE — Chicago Loop Document Courier

  EXAMPLE placeholder — not a real company.

  Chicago / Cook County (EXAMPLE)

  • Index Department walk-in / drop-off
  • Return shipping
  • Multi-document batches

• EXAMPLE — Prairie State Apostille Assist

  EXAMPLE placeholder — not a real company.

  Illinois statewide / out-of-state clients (EXAMPLE)

  • Vital record coordination
  • County clerk notary authentication assist
  • Status updates
  • Overnight return shipping

FAQ

How long does an Illinois apostille take?

Walk-in requests at Index Department counters in Chicago or Springfield are often processed while you wait (subject to volume). Mail requests are commonly quoted at about 7–14 business days of processing after receipt, plus transit—confirm current process on the official SOS site before you send originals.

Can I apostille a photocopy?

Usually you need a certified original or a properly notarized/certified copy. Illinois Index Department authenticates Illinois public-official certifications or Illinois-notarized documents that meet current requirements (often including county clerk authentication of the notary)—check current SOS guidance for your document type.

Who issues apostilles in Illinois?

The Illinois Secretary of State Index Department issues apostilles and certificates of authority for Illinois-origin documents. Out-of-state notarizations must go to that other state’s Secretary of State.