Lake Davis is a census-designated place (CDP) in Plumas County, California, United States. The population was 23 at the 2000 census.GeographyLake Davis is located at .According to the United States Census Bureau, the CDP has a total area of 5.4sqmi, 99.92% of it land and 0.08% of it water.Demographics2010The 2010 United States Census reported that Lake Davis had a population of 45. The population density was 8.4 people per square mile (3.2/kmĀ²). The racial makeup of Lake Davis was 45 (100.0%) White, 0 (0.0%) African American, 0 (0.0%) Native American, 0 (0.0%) Asian, 0 (0.0%) Pacific Islander, 0 (0.0%) from other races, and 0 (0.0%) from two or more races. Hispanic or Latino of any race were 2 persons (4.4%).The Census reported that 45 people (100% of the population) lived in households, 0 (0%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized.There were 23 households, out of which 2 (8.7%) had children under the age of 18 living in them, 17 (73.9%) were opposite-sex married couples living together, 0 (0%) had a female householder with no husband present, 0 (0%) had a male householder with no wife present. There were 1 (4.3%) unmarried opposite-sex partnerships, and 0 (0%) same-sex married couples or partnerships. 5 households (21.7%) were made up of individuals and 3 (13.0%) had someone living alone who was 65 years of age or older. The average household size was 1.96. There were 17 families (73.9% of all households); the average family size was 2.24.