The City of Ouray () is the home rule municipality that is the county seat of Ouray County, Colorado, United States. The city population was 1,000 as of the 2010 census. The Ouray Post Office has the ZIP code 81427. Ouray's climate, natural alpine environment, and scenery has earned it the nickname, "Switzerland of America".

The historic Town of Silverton is the Statutory Town that is the county seat, the most populous community, and the only incorporated municipality in San Juan County, Colorado, United States. The town is located in a remote part of the western San Juan Mountains, a range of the Rocky Mountains. The first mining claims were made in mountains above the Silverton in 1860, near the end of the Colorado Gold Rush and when the land was still controlled by the Utes. Silverton was established shortly after the Utes ceded the region in the 1873 Brunot Agreement, and the town boomed from silver mining until the Panic of 1893 led to a collapse of the silver market, and boomed again from gold mining until the recession caused by the Panic of 1907. The entire town is included as a federally designated National Historic Landmark District, the Silverton Historic District. Originally called "Bakers Park", Silverton sits in a flat area of the Animas River valley and is surrounded by steep peaks. Most of the peaks surrounding Silverton are thirteeners, the highest being Storm Peak, at 13,487 feet. The town is less than 15 miles from 7 of Colorado's 53 fourteeners, and is known as one of the premier gateways into the Colorado backcountry. Silverton's last operating mine closed in 1992, and the community now depends primarily on tourism and government remediation and preservation projects. Silverton is well known because of the Durango and Silverton Narrow Gauge Railroad, a former mine train that is now a National Historic Landmark, and internationally recognized events such as the Hardrock Hundred Mile Endurance Run. The town population reached 637 in the U.S. Census 2010.

The Town of Ridgway is the home rule municipality that is the most populous municipality in Ouray County, Colorado, United States. The town is a former railroad stop on the Uncompahgre River in the northern San Juan Mountains. The town population was 713 at the 2000 census and 924 according to the 2010 census.Steep forested mountains and cliffs surround Ridgway on the south, east, and northeast. The Uncompahgre River runs through the town and flows into the Ridgway State Park and Reservoir, to the north. Dallas Creek also flows from the south-west and forms a confluence with the Uncompahgre before entering the reservoir. There is a notable wildlife presence — mountain lions, badgers, deer, elk, bears, coyotes, wild turkey, and bald eagles are indigenous to the area. The region's bald eagles nest in the cottonwoods along the river and are a common sight in the late fall. Ridgway and the surrounding area have featured prominently in pop culture. Most notably the area is the setting of John Wayne's western movie True Grit, and others including How the West Was Won and Tribute to a Bad Man. Ridgway has the only stoplight in Ouray County, at the intersection of Highways 550 and 62.

The City of Montrose is the home rule municipality that is the county seat and the most populous municipality of Montrose County, Colorado, United States. The city population was 19,132 at the 2010 United States Census. The main road that leads in and out of Montrose is U.S. Highway 50. The town is located in cardinal-western Colorado, in the upper Uncompahgre Valley and is an economic, labor, and transportation waypoint for the surrounding recreation industry. It is also the home of a few major engineering projects, namely the Gunnison Tunnel.