Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah and Wyoming
The Mountain States — also called the Mountain West or Interior West — are one of the two divisions of the Census Bureau's West region, alongside the Pacific States. Eight states make up the division: Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah and Wyoming. It is commonly split again into a Northwest trio (Idaho, Montana and Wyoming) and a Southwest group (Arizona, Colorado, Nevada, New Mexico and Utah). Altitude defines its clothing retail: stores plan for intense sun, dry air, cold nights even in summer, and outdoor recreation that ranges from desert hiking to serious alpine skiing. Pick a state below for its own clothing store guide.

The Mountain States (also known as the Mountain West and the Interior West) form one of the nine geographic divisions of the United States that are officially recognized by the United States Census Bureau. It is a subregion of the Western United States. The Mountain States are usually split up into two other regions known as the Northwest and Southwest. Idaho, Montana, and Wyoming are considered part of the Northwest, while Arizona, Colorado, Nevada, New Mexico, and Utah are considered part of the Southwest.
If you discover that we are missing any trendy fashion boutiques in the Mountain state division of the Western states region, please tell them to add their store to our directory.
The Mountain States division is one of two divisions that are located
within the United States Census Bureau's Western region; the other
Western division is the Pacific
States.
The division's informal split matters to shoppers. In Idaho, Montana and Wyoming, stores lean into ranch, mountain and national-park-gateway retail: workwear, western wear, cold-weather layers and gear-adjacent apparel for towns serving Yellowstone and Glacier country. In Arizona, Colorado, Nevada, New Mexico and Utah, the mix widens — Colorado blends ski-town boutiques with metro Denver retail, Arizona pairs desert-casual clothing with resort wear, Utah serves both Salt Lake City shoppers and red-rock country, and Nevada adds Las Vegas, where destination shopping operates on an entirely different scale from the rest of the division. One division page, eight very different state guides: that variety is the point of following the state links.
Mountain clothing stores solve problems coastal stores rarely face. Ultraviolet exposure rises with elevation, so sun-protective shirts and hats are everyday stock, not specialty items. Temperature can swing thirty degrees between afternoon and evening, which is why layering pieces — flannel, fleece, packable insulation — anchor assortments even in summer. Dry air changes fabric care and favors natural fibers and moisture-managing blends. Visitors often underestimate all three effects and end up shopping mid-trip; the state guides linked here are the fastest route to stores in the state you are actually visiting. The companion Pacific division page, linked from this page, covers the five coastal states that complete the West region.
Arizona, Colorado, Idaho, Montana, Nevada, New Mexico and Utah, plus Wyoming — one of the nine Census divisions, inside the West region.
Into a Northwest group — Idaho, Montana and Wyoming — and a Southwest group — Arizona, Colorado, Nevada, New Mexico and Utah.
The Pacific States: Alaska, California, Hawaii, Oregon and Washington. It is linked from this page.