Thanks for responding. At least in my county they say you'd be held in contempt with a possible fine up to $500 although I concede it's a valid point brought up by others regarding delivery of mail. To date I've not heard of one person who has gotten jury duty but didn't know it because the notification was lost in the mail (this isn't me asking for that one random poster to come out of the woodwork to say "actually"
I'm not asking for examples) but it's not impossible that this could happen.
My mom's prior roommate actually got a jury duty summons after he had moved out and it appears he had not updated his address yet. For us in our county at least it's tied to your voter registration and DLs (so you could have a DL but not be registered to vote but still be chosen for jury duty). A change of address either done online by you or at the DMV office automatically updates the voter registration information (same as name changes). But we all know changing your address isn't always done in a timely manner. I know she contacted him to let him know of his summons.
It does have me wondering would my county send a secondary notice or not? IDK it doesn't list that information online.