Does anyone know what this little guy is?

[guidofatherof5]

Nice to have you on the forum, Beautiful snake.

[wolfpacksved]

Thanks guys!! I let her go asap!! I'm wondering how common they are in Illinois, just curious because I've never seen one? She was gorgeous! Really feisty too I didn't handle verso she should have been minimally stressed. Thanks again

Storeria can be quite common in some areas. An adaptable animal found in city lots, backyards, to deep woods and farm country.
Storeria dekayi | Illinois Natural History Survey | U of I

[bwiegmann]

I'm sorry I didn't mean to hurt anyone?

[drache]

don't think you did
but aside from above reasons, another good reason to let that snake go, would be that they eat slugs which are not easy to supply on a regular basis - especially the teeny ones the babies will need
welcome to the forum

[Stefan-A]

I'm sorry I didn't mean to hurt anyone?

Don't worry.

[Snaky]

Welcome to the forum! She was a nice find, but you did a good thing when you let her go
Enjoy it here.

[adamanteus]

I'm sorry I didn't mean to hurt anyone?

I'm sure you didn't. Welcome and enjoy the forum.
As Stefan says, the importance of not collecting a gravid snake is the potential damage that such collection can cause to localized populations.