Question about Wyoming (Cheyenne, Laramie, Rawlins: snake, areas, population)

[Sundance]

Is the western part of Wyoming all mountains, or do you come out of the Rockies, like in Colorado?
I've passed thru CO but I haven't been to Wyoming.
I don't care for the plains but I like mountains.

[RockyMtnr]

Western Wyoming is NOT all mountains. Here's the deal; I-80 comes out of the hi-hills of Nebraska into Wyoming. From there until Utah, you can [i]see[i] mountains but you won't be in them. Mountains are to the south (Snowy Range - Laramie to Rawlins) Uinta Range (Utah actually - but visible from Bridger Valley (Lyman) to the state line. They sit about 30 miles south of the interstate. North of I-80 there are the Wind Rivers, pretty much centralized in WY but barely visible from I-80.
The Mountains run across the northern-tier from Yellowstone to Buffalo - several different ranges including the Tetons, Snake River Range, Absarokas and the Big Horns ... and south from Yellowstone down thru Smoot in what is called Star Valley. This entire state, although part-Alpine and part-Badlands, is called the "High Desert" and what isn't mountains will remind you of such. It's all the Rockies - from way down south in CO/NM to way up north near Calgary, Alberta, Canada. After winding north thru Wyoming, the main thrust is bordered by W. Montana and E. to central Idaho. A "relief" map, where you can see the topography and feel it with your hands - will give you a better idea. Perhaps your library has one or you can contact the USGS (United States Geological Survey) for instructions on obtaining one - they're not cheap, by the way.

[sunsprit]

A topo map will show you the exact ranges listed above, but will also show you the high altitude "plains" that are between the mountain range peaks.

If you are traveling westward, once north of the I-80 corridor, you'll be in mountain country most of the time. Even the I-80 corridor, compared to most of the US, is mountainous once west of Cheyenne.

Wyoming is not as defined as Colorado, where the front range ends the plains and the mountains are rather continuous for the rest of the way westward.
You'll come through areas where the "continental divide" will be repeated several times on your way west. It's all pretty interesting, with much less population than Colorado's mountains. The Wyoming towns are fewer and farther between, with smaller population (and economic) base.