Nixon is a census-designated place (CDP) in Washoe County, Nevada, USA. The population was 374 at the 2010 census. It is part of the Reno–Sparks Metropolitan Statistical Area. It is the seat of tribal government of the Paiute Pyramid Lake Indian Reservation and home to the tribe’s Museum and Visitor Center 
According to the United States Census Bureau, the CDP has a total area of 6.3 square miles (16 km), all land.
As of the census of 2000, there were 418 people, 132 households, and 104 families residing in the CDP. The population density was 66.2 people per square mile (25.5/km²). There were 144 housing units at an average density of 22.8 per square mile (8.8/km²). The racial makeup of the CDP was 1.67% White, 96.41% Native American, 0.24% Asian, 0.24% Pacific Islander, and 1.44% from two or more races. Hispanic or Latino of any race were 4.78% of the population.
There were 132 households out of which 49.2% had children under the age of 18 living with them, 37.1% were married couples living together, 34.8% had a female householder with no husband present, and 21.2% were non-families. 17.4% of all households were made up of individuals and 5.3% had someone living alone who was 65 years of age or older. The average household size was 3.17 and the average family size was 3.59.
In the CDP, the population was spread out with 38.5% under the age of 18, 9.8% from 18 to 24, 28.5% from 25 to 44, 13.6% from 45 to 64, and 9.6% who were 65 years of age or older. The median age was 26 years. For every 100 females, there were 95.3 males. For every 100 females age 18 and over, there were 74.8 males.
The median income for a household in the CDP was $25,417, and the median income for a family was $28,906. Males had a median income of $26,250 versus $22,250 for females. The per capita income for the CDP was $9,926. About 22.3% of families and 26.3% of the population were below the poverty line, including 29.8% of those under age 18 and 25.6% of those age 65 or over.