Median and average values may be affected by confidentiality in small areas.
Due to the small population for this area, limited information has been provided. In the 2016 Census, there were 36 people in Black Rock (SA) (SSC40112). Of these, 51.7% were male and 48.3% were female. The median age was 58 years and the average number of people per household was 1.8.