A Illinois address follows the standard US order: street, apartment or suite, city, two-letter state code, and ZIP code. The state code is IL.
This page adds the state-specific details that are easy to miss: the capital, the largest city, the timezone, a ZIP example, and the state sales-tax position.
How to write a Illinois address
Write the street address first, then the apartment or suite if there is one, then the city, the state code IL, and the ZIP code. Put the country on the last line for international mail.
Example format: 123 Example Street, Apt 4B, Chicago, IL 60601, United States.
Illinois at a glance
Use these facts to check a form, a shipping label, or a test fixture. They describe the state, not a specific address.
| Field | Value |
|---|---|
| State code | IL |
| Capital | Springfield |
| Largest city | Chicago |
| Timezone | America/Chicago |
| ZIP example | 60601 |
| State sales tax | 6.25% |
Cities with pre-filtered generators
Open a city page to generate an address in that city with the state and ZIP already selected.
- Chicago (Cook County) — /us/illinois/chicago
- Springfield (Sangamon County) — /us/illinois/springfield
Sales tax and address checks
Illinois has a state-level base sales tax of 6.25%. Cities and counties may add local tax, so the checkout rate can be higher.
An address does not decide the final tax rate on its own. The seller, the product category, local rules, and nexus can all change the result.
Questions
- Street address, apartment or suite, city, IL, ZIP code, United States. The state code is always IL.
- Illinois has a state-level base sales tax of 6.25%. Cities and counties may add local tax, so the checkout rate can be higher.
- Yes. Open the Illinois generator to pick a city, or use the city pages listed above for a pre-filtered result.
What is the address format in Illinois?+
Does Illinois have a sales tax?+
Can I generate a Illinois address?+
Examples are synthetic. Do not use a generated address for identity checks, account registration, or delivery.