Pagosa Springs is a municipality that is the county seat of, and the only incorporated municipality in, Archuleta County, Colorado, United States. The population was 1,727 at the 2010 census. Approximately 65 percent of the land in Archuleta County is either San Juan National Forest, Weminuche and South San Juan Wilderness areas, or Southern Ute Indian land.
Pagosa Springs and the surrounding county are both experiencing a substantial influx of second-home owners; a 2006 property assessment indicates that 60% of area private properties are owned by non-residents.
Pagosa Springs is located approximately 35 miles (56 km) north of the New Mexico border, at 7,126 feet (2,172 m) above sea level on the Western Slope of the Continental Divide. This combination of high desert plateau and the Rocky Mountains to the north and east creates an unusually mild climate, especially in the summer months. Pagosa sees around 300 days of sun each year, as well as four distinct seasons.
The town is located in the upper San Juan Basin, surrounded by the 3-million-acre (4,700 sq mi; 12,000 km2) San Juan National Forest, and adjacent to the largest wilderness area in the state of Colorado, the Weminuche Wilderness.
The town is named for the sulfur springs located there, including the world's deepest geothermal hot spring. This "Mother Spring" feeds the pools hosted by three local hot spring soaking locations within town. The water from the "Mother" Spring is approximately 144 °F (62 °C).