There were 283 people living at Mimili in the 2006 census. The residents are mainly Aṉangu people who speak either Pitjantjatjara or Yankunytjatjara as their first language. The 2001 census data showed that Mimili had the lowest average weekly income per person (AU$172 compared with the South Australian average of AU$345). However, it also had one of the state's highest proportions of residents under the age of 15 (32.6%); and the state's highest ratio of single-parent families (36.0% compared with a statewide average of 15.6%).