In South Australia, one of the states of Australia, there are many areas which are commonly known by regional names. Regions are areas that share similar characteristics. These characteristics may be natural such as the Murray River, the coastline, desert or mountains. Alternatively, the characteristics may be cultural, such as common land use. South Australia is divided by numerous sets of regional boundaries, based on different characteristics. In many cases boundaries defined by different agencies are coterminous.
Convention and common use has divided South Australia into a number of regions. These do not always have strict boundaries between them and have no general administrative function or status. Many of them correspond to regions used by various administrative or government agencies, but they do not always have the same boundaries or aggregate in the same way. The generally accepted regions are:
Most of the other regional divisions of the state use a combination of these same labels, sometimes grouped, and sometimes with precise boundaries that might be slightly different in each case.
The Australian Bureau of Statistics has multiple regional structures for which it analyses and reports data. These regional structures derive from the Australian Standard Geographical Classification (AGSC). The AGSC defines at the very smallest level, the Census Collection District (CCD). These CCD's aggregate to form the Statistical Local Area (SLA), which is the common base unit for each of the larger regional structures. The boundaries of the SLA are designed to be typically coterminous with Local Government Areas unless the LGA does not fit entirely into a Statistical Subdivision (SSD), or is not of a comparative nature to other LGA's. Bureau of Statistics provides statistics for Local Government Areas, as well as three other statistical structures: Statistical Divisions, Statistical Regions, and Statistical Districts.
Statistical Divisions (SD) form the main structural hierarchy of statistical analysis. These regions are structured to provide a broad range of social, demographic and economic statistics. The basis for the boundary delineations center on socioeconomic criteria. The eight Statistical Divisions in South Australia are: