Gold Hill is a census-designated place (CDP) in Boulder County, Colorado, United States. The population was 230 at the 2010 census.
This settlement is located to the northwest of Boulder, perched on a mountainside above Left Hand Canyon at an elevation of 8,300 feet. Originally a mining camp, it was the site of the first major discovery of gold during the 1859 Colorado Gold Rush and remained an important mining camp throughout the late 19th century, with a population approaching 1500 at its height, before falling into decline. It has been revived somewhat in recent years as a quiet isolated haven, with no paved streets, but easily accessed by dirt roads. The town contains numerous historic wooden structures, some restored in recent years, as well decaying ruins from its mining heyday. It has a small museum and two-room schoolhouse, the Gold Hill School, which since 1873 has been the oldest continuously operating public school in Colorado. Other businesses include a General Store and a restored inn listed on the National Register of Historic Places. The town is laid out on a small grid of dirt streets.
Gold Hill is located at 40°3′50″N 105°24′43″W / 40.06389°N 105.41194°W / 40.06389; -105.41194 (40.063785, -105.411911).
According to the United States Census Bureau, the CDP has a total area of 2.0 square miles (5.2 km), all of it land.
As of the census of 2000, there were 210 people, 90 households, and 47 families residing in the CDP. The population density was 104.7 people per square mile (40.3/km²). There were 114 housing units at an average density of 56.8 per square mile (21.9/km²). The racial makeup of the CDP was 89.05% White, 0.48% African American, 3.33% Native American, 1.90% Asian, 4.29% from other races, and 0.95% from two or more races. Hispanic or Latino of any race were 7.62% of the population.
There were 90 households out of which 33.3% had children under the age of 18 living with them, 46.7% were married couples living together, 2.2% had a female householder with no husband present, and 46.7% were non-families. 35.6% of all households were made up of individuals and 1.1% had someone living alone who was 65 years of age or older. The average household size was 2.33 and the average family size was 3.00.
In the CDP, the population was spread out with 22.9% under the age of 18, 4.8% from 18 to 24, 37.1% from 25 to 44, 32.4% from 45 to 64, and 2.9% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 114.3 males. For every 100 females age 18 and over, there were 116.0 males.
The median income for a household in the CDP was $48,750, and the median income for a family was $76,850. Males had a median income of $48,929 versus $12,105 for females. The per capita income for the CDP was $24,675. None of the population or families were below the poverty line.