Nucla is a Statutory Town in Montrose County, Colorado, United States. The population was 711 at the 2010 census. Its name comes from the town's founders intent that it serve as a "nucleus" for the surrounding farms and mines, although it has since come to be associated with the growth of uranium mining in the region.
Nucla is located at 38°16′0″N 108°32′50″W (38.266775, -108.547146).
According to the United States Census Bureau, the town has a total area of 0.7 square miles (1.8 km2), all of it land. Nucla is located in an area of desert land, surrounding the Uncompahgre National Forest.
As of the census of 2000, there were 734 people, 311 households, and 208 families residing in the town. The population density was 1,036.0 people per square mile (399.2/km²). There were 369 housing units at an average density of 520.8 per square mile (200.7/km²). The racial makeup of the town was 94.69% White, 1.09% Native American, 0.14% Asian, 0.54% from other races, and 3.54% from two or more races. Hispanic or Latino of any race were 3.68% of the population.