Johnsville, California

At the 2010 census Johnsville had a population of 20. The population density was 1.4 people per square mile (0.6/km²). The racial makeup of Johnsville was 20 (100.0%) White, 0 (0.0%) African American, 0 (0.0%) Native American, 0 (0.0%) Asian, 0 (0.0%) Pacific Islander, 0 (0.0%) from other races, and 0 (0.0%) from two or more races. Hispanic or Latino of any race were 0 people (0.0%).[4]

The whole population lived in households, no one lived in non-institutionalized group quarters and no one was institutionalized.

There were 11 households, 0 (0%) had children under the age of 18 living in them, 8 (72.7%) were opposite-sex married couples living together, 0 (0%) had a female householder with no husband present, 0 (0%) had a male householder with no wife present. There were 0 (0%) unmarried opposite-sex partnerships, and 0 (0%) same-sex married couples or partnerships. 3 households (27.3%) were one person and 0 (0%) had someone living alone who was 65 or older. The average household size was 1.82. There were 8 families (72.7% of households); the average family size was 2.13.

The age distribution was 0 people (0%) under the age of 18, 1 people (5.0%) aged 18 to 24, 0 people (0%) aged 25 to 44, 14 people (70.0%) aged 45 to 64, and 5 people (25.0%) who were 65 or older. The median age was 57.5 years. For every 100 females, there were 122.2 males. For every 100 females age 18 and over, there were 122.2 males.

There were 103 housing units at an average density of 7.5 per square mile, of the occupied units 10 (90.9%) were owner-occupied and 1 (9.1%) were rented.The homeowner vacancy rate was 9.1%; the rental vacancy rate was 0%. 18 people (90.0% of the population) lived in owner-occupied housing units and 2 people (10.0%) lived in rental housing units.

At the 2000 census there were 21 people, 12 households, and 3 families in the CDP. The population density was 1.5 people per square mile (0.6/km²). There were 71 housing units at an average density of 5.2 per square mile (2.0/km²). The racial makeup of the CDP was 80.95% White, 4.76% Asian, 14.29% from other races. 14.29% of the population were Hispanic or Latino of any race.[5] Of the 12 households 16.7% had children under the age of 18 living with them, 25.0% were married couples living together, and 75.0% were non-families. 66.7% of households were one person and 8.3% were one person aged 65 or older. The average household size was 1.75 and the average family size was 3.67.

The age distribution was 19.0% under the age of 18, 4.8% from 18 to 24, 23.8% from 25 to 44, 47.6% from 45 to 64, and 4.8% 65 or older. The median age was 46 years. For every 100 females, there were 90.9 males. For every 100 females age 18 and over, there were 112.5 males.

The median household income was $6,042 and the median family income was $0. Males had a median income of $0 versus $48,750 for females. The per capita income for the CDP was $8,030. There are 100.0% of families living below the poverty line and 86.5% of the population, including 100.0% of under eighteens and none of those over 64.