Boyes Hot Springs is located at GR1.(38.311068, -122.483973)
As of the censusGR2 of 2000, there were 6,665 people, 2,256 households, and 1,495 families residing in the CDP. The population density was 2,450.8/km² (6,329.9/mi²). There were 2,395 housing units at an average density of 880.7/km² (2,274.6/mi²). The racial makeup of the CDP was 74.99% White, 0.42% African American, 0.72% Native American, 0.92% Asian, 0.09% Pacific Islander, 18.24% from other races, and 4.62% from two or more races. Hispanic or Latino of any race were 41.67% of the population.
There were 2,256 households out of which 37.7% had children under the age of 18 living with them, 49.5% were married couples living together, 11.0% had a female householder with no husband present, and 33.7% were non-families. 25.0% of all households were made up of individuals and 6.4% had someone living alone who was 65 years of age or older. The average household size was 2.95 and the average family size was 3.53.
In the CDP the population was spread out with 28.5% under the age of 18, 10.7% from 18 to 24, 32.8% from 25 to 44, 20.2% from 45 to 64, and 7.8% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 104.4 males. For every 100 females age 18 and over, there were 105.7 males.
The median income for a household in the CDP was $50,668, and the median income for a family was $54,469. Males had a median income of $35,085 versus $28,951 for females. The per capita income for the CDP was $20,115. About 8.6% of families and 12.0% of the population were below the poverty line, including 16.0% of those under age 18 and 9.9% of those age 65 or over.