2 days flat to me in NC, maybe 3 max to OR?
I know when I get something from the Wes'coas' (The bes'coas', yo)...
usually when I see the shipping confirmation (its usps..grain of salt and all that) it generally gets to Vegas early in the am on the day after and in the mailbox that afternoon.
Kind of depends how close you are to the major city where the distribution center is. I'm in Henderson, which is basically Las Vegas anyway.
So usually two days, +1 if you are in a satellite town with any sort significant driving time.
Basically you have to assume in your noggin' where it is, because USPS updates their tracking as an afterthought... have had items delivered and still get an update that it is enroute to destination.