How much ground can a ground hog hog if a ground hog could hog ground?

Quite a bit.

Living in NYC, there are a few "ground hogs" who own tremendous amounts of real-estate.

Looking at The Catholic Church, NYU, and Donald Trump, to name a few, we're talking about a lot of ground (in a place where ground is at a premium).

Before or after he gets run over?

The Ground hog could only hog as much ground as his body will allow for hogging. Not much!

a ground hogcould hog all the ground he could hog if a ground hog could hog ground

this is trouble-free! There are 2 solutions on your question. If the floor hog is an industrious floor hog, a floor hog could floor as lots floor as a floor hog ought to floor if a floor hog ought to floor floor. If the floor hog is a lazy floor hog, no longer lots.

1 entire small town in Pennsylvania

It's size, plus paw's reach for personal space.

'bout just as much wood as a woodchuck chucks if a woodchuck could chuck wood...