My Aunt said her congregation is nearly empty and "just a bunch of older people." I've also seen that several congregations have been consolidated. About three years ago everyone got shuffled around - which makes it hard to tell just how much things have shrunk.
Here in California I do get the sense that things are on the decline - I used to see witness out knocking on doors all the time. Now I NEVER see them. I wonder if it's the same in other parts of the US too?