According to the United States Census Bureau, the CDP has a total area of 13.2 square miles (34.2 km²), all of it land. Chilcoot and Vinton are actually two separate small communities that are two miles apart on State Route 70, but were grouped together by the USCB for statistical purposes.
Frenchman Lake, Plumas County, California is a nearby recreation area known for its fishing, camping and water sports and is the largest contributor to the economies of Vinton and Chilcoot.
As of the census of 2000, there were 387 people, 163 households, and 101 families residing in the CDP. The population density was 29.3 people per square mile (11.3/km²). There were 202 housing units at an average density of 15.3/sq mi (5.9/km²). The racial makeup of the CDP was 95.09% White, 0.26% Black or African American, 0.52% Native American, 0.52% Pacific Islander, 3.10% from other races, and 0.52% from two or more races. 5.17% of the population were Hispanic or Latino of any race.
There were 163 households out of which 30.7% had children under the age of 18 living with them, 52.1% were married couples living together, 6.1% had a female householder with no husband present, and 38.0% were non-families. 36.2% of all households were made up of individuals and 8.0% had someone living alone who was 65 years of age or older. The average household size was 2.37 and the average family size was 3.12.
In the CDP the population was spread out with 28.7% under the age of 18, 4.7% from 18 to 24, 25.1% from 25 to 44, 32.8% from 45 to 64, and 8.8% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 101.6 males. For every 100 females age 18 and over, there were 112.3 males.
The median income for a household in the CDP was $35,938, and the median income for a family was $39,583. Males had a median income of $42,361 versus $21,406 for females. The per capita income for the CDP was $17,355. About 10.0% of families and 12.0% of the population were below the poverty line, including 9.0% of those under age 18 and none of those age 65 or over.
The primary local news source is the Portola Reporter, a newspaper published every Wednesday.
In the state legislature Chilcoot-Vinton is located in the 1st Senate District, represented by Republican Dave Cox, and in the 3rd Assembly District, represented by Republican Rick Keene. Federally, Chilcoot-Vinton is located in California's 4th congressional district, which has a Cook PVI of R +11 and is represented by Republican John Doolittle.