So not only did I SEE one, we more or less had a pet one for awhile. We came home one day and Stu (we named him) was basking in the sun on our deck. He was a big boy. We (stupidly) decided to feed him produce scraps because he was CUTE. He became a tenant, but we didn't keep feeding him at least.
Fast forward a year or two to when our exterminator told us that groundhogs burrow up along foundations, often, and can cause water retention problems that damage your foundation. By then, he was giant. I don't know if it was Stu or Son of Stu by that point, but man... he was a chonk.
So we had to trap him. We tried a humane trap, but he was too smart, and eventually we had to use a kill trap. I cried over the decision, but I couldn't risk the house having structural problems. Stu was never caught that we know of, but the trap was sprung and we haven't seen him since. The exterminator filled in the sizeable tunnel he had made with Quikcrete after baiting for several days to make sure he was gone.
I hope he's still out there somewhere. Just not under our deck.