Mine is 7,200 based on the sticker on the truck. For some reason I always want to say it's a little higher than that. The same vehicle in Expy trim will be a few hundred pounds less typically.
Towing MPG varies for me. In mixed flat/gentle rolling hills it ranges around 7.5 - 10.0. In steeper hills... I don't want to know. Non-towing, I get 17 (mixed) to 18.5 (all highway) depending on conditions. Since 98% of my driving is non-towing and 98% of my towing is in the flats, it makes more sense for me to drive a truck like this (or close to it) than to go with something like a 3/4 ton diesel - as nice as that would be at times.
This is the best vehicle I've ever owned and I'm going to hate replacing it; people don't get sentimental about their cars the way they used to, but I do. But, it'll be time in about a year (maybe - I've also got two more teenagers starting to drive this year

) - so I'm eagerly awaiting the power train plans for the major truck manufacturers and for real-world feedback on them. I was looking forward to a small diesel in the F-150 but those plans got dropped when the economy tanked... there seems to be lots of new stuff coming down the pike, much of which isn't time-tested.