I would guess this is why amazon keeps expanding their distribution footprint so much. I would hazard a guess a rather large percentage of the US population is already in a 2-day ground shipping radius. In the past couple years, I can only think of one or two things shipped via prime that came via air mail, even overnighted stuff came ground.
> I would hazard a guess a rather large percentage of the US population is already in a 2-day ground shipping radius.
I live in a fairly low population state, and there are at least 2 major UPS distribution centers within a 3-6 hour drive. My small town also has an UPS office and ground facility where shipments through them to the surrounding communities originate. Even FedEx has distribution centers nearby (although their shipping here is notoriously slow and clumsy).
So, I'd believe it. I can't think of anything gets shipped out here via air and much of this area is rural. The only reason Amazon's "free" shipping is slow to this region is likely because they probably hold orders destined for a specific area or zip code until they can get a bulk shipping rate on all of the items and send them out via the same carrier. I've speculated about this before because Amazon will happily hold onto items for 1-2 weeks via free shipping that will arrive within 2-3 days after they've been marked as "shipped." Amazon Prime shipped items usually arrive within 2 days, and like you, I'm pretty sure those are overnight ground.
