Upper Lake (formerly, Upper Clear Lake and Upperlake) is a census-designated place (CDP) in Lake County, California, United States. Upper Lake is located 8 miles (13 km) north of Lakeport, at an elevation of 1345 feet (410 m). The population was 989 at the 2000 census. The Habematolel Pomo of Upper Lake are headquartered here.
According to the United States Census Bureau, the CDP has a total area of 6.0 square miles (15.5 km²), of which, 5.8 square miles (15.0 km²) of it is land and 0.2 square miles (0.5 km²) of it (3.33%) is water.
As of the census of 2000, there were 989 people, 389 households, and 259 families residing in the CDP. The population density was 170.7 people per square mile (66.0/km²). There were 433 housing units at an average density of 74.7/sq mi (28.9/km²). The racial makeup of the CDP was 84.23% White, 0.81% African American, 4.35% Native American, 1.72% Asian, 6.07% from other races, and 2.83% from two or more races. Hispanic or Latino of any race were 14.86% of the population.
There were 389 households out of which 28.8% had children under the age of 18 living with them, 46.5% were married couples living together, 13.6% had a female householder with no husband present, and 33.4% were non-families. 27.8% of all households were made up of individuals and 15.4% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 3.05.
In the CDP the population was spread out with 26.5% under the age of 18, 10.3% from 18 to 24, 23.3% from 25 to 44, 22.3% from 45 to 64, and 17.6% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 92.0 males. For every 100 females age 18 and over, there were 84.5 males.
The median income for a household in the CDP was $22,143, and the median income for a family was $33,393. Males had a median income of $21,964 versus $17,188 for females. The per capita income for the CDP was $11,670. About 23.8% of families and 25.5% of the population were below the poverty line, including 23.7% of those under age 18 and 17.2% of those age 65 or over.
In the state legislature Upper Lake is located in the 2nd Senate District, represented by Democrat Pat Wiggins, and in the 1st Assembly District, represented by Democrat Patty Berg. Federally, Upper Lake is located in California's 1st congressional district, which has a Cook PVI of D +10 and is represented by Democrat Mike Thompson.