Geography
Johannesburg is located at 35°22'10" North, 117°38'20" West (35.369564, -117.638983)1.
According to the United States Census Bureau, the town has a total area of 6.3 km² (2.5 mi²). 6.3 km² (2.5 mi²) of it is land and none of it is covered by water.
Demographics
As of the census2 of 2000, there are 176 people, 85 households, and 45 families residing in the town. The population density is 27.7/km² (72.0/mi²). There are 133 housing units at an average density of 21.0/km² (54.4/mi²). The racial makeup of the town is 91.48% White, 0.57% Black or African American, 1.14% Native American and 2.84% from other races, and 3.98% from two or more races. 5.68% of the population are Hispanic or Latino of any race.
There are 85 households out of which 21.2% have children under the age of 18 living with them, 36.5% are married couples living together, 11.8% have a female householder with no husband present, and 45.9% are non-families. 35.3% of all households are made up of individuals and 21.2% have someone living alone who is 65 years of age or older. The average household size is 2.07 and the average family size is 2.70.
In the town the population is spread out with 20.5% under the age of 18, 4.0% from 18 to 24, 22.2% from 25 to 44, 31.8% from 45 to 64, and 21.6% who are 65 years of age or older. The median age is 48 years. For every 100 females there are 95.6 males. For every 100 females age 18 and over, there are 97.2 males.
The median income for a household in the town is $63,611, and the median income for a family is $72,222. Males have a median income of $51,250 versus $31,250 for females. The per capita income for the town is $21,478. 7.6% of the population and 0.0% of families are below the poverty line. Out of the total people living in poverty, none are under the age of 18 or over 65.