Understand who can serve, what address is required, and why service-of-process handling is an ongoing obligation.
The registered agent receives service of process and official correspondence for the company.
The registered office must use a qualifying Illinois street or road address and match the registered agent’s business office. A P.O. box alone is not acceptable.
An eligible Illinois resident may serve, or a properly authorized entity may provide registered-agent service.
Owners should understand the privacy and operational consequences before listing a home address.
If the agent or registered office changes, the LLC should complete the appropriate Illinois change filing rather than simply allowing the old information to become inaccurate.