Most people typing 'is ilsos.gov a scam' are probably just making sure they've landed on the right site before entering sensitive information like a driver's license number or vehicle details. The short answer is that ilsos.gov is the official online portal for the Illinois Secretary of State, and it's about as legitimate as a website can be. The domain is a .gov, which is strictly regulated and only issued to verified U.S. government entities. It has been registered for over 20 years, and its hosting and security setup are professional.
That said, our analysis did notice that the snapshot we reviewed didn't show an obvious contact page or privacy policy. For a government website that collects personal data, those documents are legally required and almost certainly exist on another part of the site. If you're using ilsos.gov to renew a license or register a vehicle, you're on the right page. Just keep an eye out for the official contact information if you ever need help – it should be easy to find once you're logged in or on a subpage.
If you want to double-check, the Illinois Secretary of State's office is a real, public-facing government agency, so you can always cross-reference the website against official state communications. But based on every signal we looked at – the domain, the age, the security, the clean reputation – there's no reason to doubt ilsos.gov. It's not fake, and it's not a scam.