When my now husband (USC) and I (UKC) went to get out marriage licence, we got it in Indiana where his parents live and where we got married. My husband lives in Chicago and still has his Indiana address on his ID which we used to get the licence, so the licence has his parents address on where we said he lived. So we have his parents address as where he lives on the licence but we are sending visa forms off and this will require his chicago address, is there a way of changing the address on the licence or have we done a terrible thing and will ruin our chance of getting a visa? Please help!

It's not illegal to use a different address on the marriage license. It is an address that exists - his parent's address. It may hold things up a bit visa wise. And there is no way now to change the address on the marriage license.

Thank you for your answer! I know I spelt license wrong ;( I'm super worrried about this.

It would be a different matter if the address in question didn't exist at all. But that is not the case with your address used.