The Post Office is closing, or preparing to close some offices in the US. The list is actually pretty big. I think there were close to 4,000 offices.
I checked the list and I found it was mostly offices in Philly from our area. I did read about the Norristown branch possibly being one of the offices ( Bridgeport), but when I looked on the actual Post Office site that didn’t seem to be listed.
So, freel free to use your local post office.