San Miguel County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 7,359. The county seat is Telluride. The county is named for the San Miguel River.
According to the U.S. Census Bureau, the county has a total area of 1,289 square miles (3,340 km), of which 1,287 square miles (3,330 km) is land and 2.0 square miles (5.2 km) (0.2%) is water.
As of the census of 2000, there were 6,594 people, 3,015 households, and 1,423 families residing in the county. The population density was 5 people per square mile (2/km²). There were 5,197 housing units at an average density of 4 per square mile (2/km²). The racial makeup of the county was 93.57% White, 0.29% Black or African American, 0.85% Native American, 0.74% Asian, 0.08% Pacific Islander, 3.37% from other races, and 1.11% from two or more races. 8.6% of the population were Hispanic or Latino of any race.
There were 3,015 households out of which 22.80% had children under the age of 18 living with them, 38.30% were married couples living together, 5.40% had a female householder with no husband present, and 52.80% were non-families. 32.70% of all households were made up of individuals and 2.50% had someone living alone who was 65 years of age or older. The average household size was 2.18 and the average family size was 2.77.
In the county, the population was spread out with 17.60% under the age of 18, 9.90% from 18 to 24, 43.30% from 25 to 44, 25.80% from 45 to 64, and 3.40% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 120.80 males. For every 100 females age eighteen 18 and over, there were 126.40 males.
The median income for a household in the county was $48,514, and the median income for a family was $60,417. Males had a median income of $35,922 versus $30,278 for females. The per capita income for the county was $35,329. About 6.60% of families and 10.40% of the population were below the poverty line, including 11.10% of those under age 18 and 8.00% of those age 65 or over.