The 2010 United States Census reported that Plumas Lake had a population of 5,853.。The population density was 698.3 people per square mile (269.6/km²)。 The racial makeup of Plumas Lake was 3,923 (67.0%) White, 372 (6.4%) African American, 73 (1.2%) Native American, 474 (8.1%) Asian, 44 (0.8%) Pacific Islander, 451 (7.7%) from other races, and 516 (8.8%) from two or more races.。Hispanic or Latino of any race were 1,312 persons (22.4%)。The Census reported that 5,853 people (100% of the population) lived in households, 0 (0%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized。