Getting mail with someone else name but my address

Over the last month we've gotten two pieces of mail with someone else name but our address. The first one appeared to be a check from a company and the latest is a check from Social Security visible through the address window. I didn't think much about it on the first one and just wrote "Person not at this address", dropped it back in the mail and forgot about it. I don't remember if the names on both were the same. Our address is quite unique so it isn't someone mistaking street for drive or something like that. And prior to us living here it was an orchard.

Has anyone ever heard of anything like this?

An interesting side not is both times we received one of these our camera showed someone coming to the door in the middle of the day and impatiently ringing the bell and knocking. The first time was a guy and the second was a woman. Neither appeared to be selling anything, both were dressed some what sloppy and both drove specifically to our house and then left so they weren't going door to door. I didn't save the camera footage the first time so I don't know if it was the same car.

I think I'll take this one into the local social security office on Monday, but I'm not expecting much of a response. I did a search and found there are scams where they mix names, addresses and ss#'s to create new identities but someone is getting checks sent, which is odd.
 
Yes, and now that you mention that there was a sticker stuck to one of our pieces of mail some time back that had something about forwarding on it. I called the post office and they checked their records and didn't show anything for our address.
 
Old scam, they use your address, then follow the mailman and take it out of your box before you do.
Or if it's not in the box, they stop by and ask if you accidentally got their mail.
The USPS has no way of knowing whether they live at your address or not.