Does anyone know of any winter camping areas near any of the Vail resorts (Vail, Beaver Creek, A Basin, Breck, Keystone)? I don't mind hiking in as long as my Jeep is still there when I get back. I know there's good ice up there, but does anyone camp nearby or does everyone day trip it?

Try the Spruce Creek TH close to Breck (south on US9, turn off near Goose Pasture Tarn). It's a popular trailhead for snowshoeing/crosscountry skiing and Francies Cabin (so overnight parking is common) and I've seen people pitch tents right on the other side of the plowed snow berm - but going a little further into the woods would probably be ideal.

Up on tenderfoot mountain, which is the mountain that route 6 goes around. If heading east on the west side of the tunnel the mountain is on your right. There is access on the dump road as you come off loveland pass from the east just after you pass Keystone. That was a couple of years ago but might be a good option depending on snowpack.
Good luck

What kind of Jeep? If you can sleep inside your car rather than pitching a "here I am, camping right here!" nearby tent, you'll be far more stealth!
The summit county I-70 corridor is overrun with people and camping/parking regulations so good luck.

Vail Pass is great. Yes you have to pay a small fee to park but then a short ski/snow shoe trip in and you can camp. You then have the bonus facility of the rest area for hitting the bathroom. North side of the highway is wilderness so no snow mobilers.

Montezuma road above keystone has plenty places for camping in your vehicle or a tent. No hiking required, and nobody will bother you

+1 for Montezuma Road.

Otherwise, the only trick is overnight parking. Back when I was hard, all I needed was a bivy sack. With a bivy, you can keep a very low profile and sleep pretty much anywhere.

It's kind of lame but the old school ski bum lifestlye ain't what it used to be due to all the private property regulations. haha think how hard it was it Aspen Extreme and then imagine it worse.

I don't believe it's changed, but you should be able to camp in the upper lots at Abasin. Not sure if Vail's influence has killed that tho.

I think I've heard of some spots in Vail, but it's hard to even find a place to park for day skiing that's free and not almost in Eagle.

Thanks for the info! @Bob, I've got a wrangler that I could easily bivy under, but cannot sleep in. Anybody know anything about Red Sandstone Road in Vail? According to the dispersed camping maps (MVUMs), it looks promising for basecamping in Vail...
Also not in Summit, but how about the approach for Gray's and Torrey's? I saw some summer spots really close to the road on the way to the trailhead, but has anyone done it?
On a related note, would anyone be up for building an igloo somewhere in that area? 1 igloo tool and a few people with shovels would make quick work of it!