Kelseyville Riviera is a planned community in Lake County, California. In 2021, its name was changed from Clearlake Riviera by its homeowners association. The population was 3,410 at the 2020 census.
According to the United States Census Bureau, the CDP has a total area of 5.29 square miles (13.7 km), over 99% of it land. It lies at an elevation of 1,755 feet (535 m).
The community first appeared as a census designated place in the 2010 U.S. census under the name Clearlake Rivera.
The 2020 United States census reported that Clearlake Riviera had a population of 3,410. The population density was . The racial makeup of Clearlake Riviera was 74.8% White, 1.8% African American, 2.4% Native American, 1.5% Asian, 0.1% Pacific Islander, 6.5% from other races, and 12.8% from two or more races. Hispanic or Latino of any race were 19.1% of the population.
The whole population lived in households. There were 1,355 households, out of which 26.1% included children under the age of 18, 45.7% were married-couple households, 11.0% were cohabiting couple households, 22.2% had a female householder with no partner present, and 21.1% had a male householder with no partner present. 24.7% of households were one person, and 13.9% were one person aged 65 or older. The average household size was 2.52. There were 864 families (63.8% of all households).
The age distribution was 21.2% under the age of 18, 5.6% aged 18 to 24, 24.5% aged 25 to 44, 26.5% aged 45 to 64, and 22.2% who were 65years of age or older. The median age was 44.2years. For every 100 females, there were 95.3 males.
There were 1,582 housing units at an average density of , of which 1,355 (85.7%) were occupied. Of these, 72.8% were owner-occupied, and 27.2% were occupied by renters.