Kingston first appeared as a
census designated place in the
1990 U.S. census. Of the 533 households, 26.1% had children under the age of 18; 47.8% were married couples living together; 5.6% had a female householder with no husband present and 43.2% were non-families. Of all households, 37.5% were made up of individuals and 11.1% had someone living alone who was 65 years of age or older. The average household size was 2.29 and the average family size was 3.10. There were 561 households, out of which 24.4% had children under the age of 18 living with them, 44.7% were
married couples living together, 8.4% had a female householder with no husband present, and 43.7% were non-families. 36.4% of all households were made up of individuals, and 8.0% had someone living alone who was 65 years of age or older. The average household size was 2.30 and the average family size was 3.08. In the CDP the population was spread out, with 20.3% under the age of 18, 6.7% from 18 to 24, 36.4% from 25 to 44, 23.1% from 45 to 64, and 13.5% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 93.4 males. For every 100 females age 18 and over, there were 90.7 males. The median income for a household in the CDP was $65,962, and the median income for a family was $80,242. Males had a median income of $56,371 versus $46,250 for females. The
per capita income for Kingston was $34,457. None of the families and 1.0% of the population were living below the
poverty line, including no under eighteens and none of those over 64. ==Religion==