Illinois Business Lookup — Search Illinois Business Licenses & Entity Records
Search Illinois business entities in the official Secretary of State database.
Search IllinoisSOS Database →Opens the official Illinois Secretary of State business search.
About Illinois Business Records
The Illinois Secretary of State maintains records for all business entities registered in the state, including LLCs, corporations, partnerships, and nonprofit organizations. These records are public information and can be searched free of charge.
Common reasons to search Illinois business records include verifying a company is properly registered, checking entity status (active or dissolved), finding a registered agent for service of process, and confirming business details before entering into contracts.
Frequently Asked Questions
How do I search for a business in Illinois?
Enter the business name in the search field above, or click the link to search directly on the Illinois Secretary of State website. You can search for LLCs, corporations, partnerships, and other registered business entities.
What information is available in Illinois business records?
Illinois business records typically include the entity name, type (LLC, corporation, etc.), filing date, status (active/inactive), registered agent, and principal office address.
Is this search free?
Yes. Illinois business entity records are public information maintained by the Secretary of State. Our search tool and the official database are both free to use.