Statistical geographies were developed by the Office for National Statistics (ONS) following the 2001 Census.
They are a set of geographies that work in layers to cover the whole of Wales. The layers are:
- Output Area - OA (around 400 people);
- Lower Super Output Area - LSOA (around 1,600 people);
- Middle Super Output Area - MSOA (around 7,700 people);
- Upper Super Output Area - USOA (around 25,000 people); and
- Local authority – LA.
InfoBaseCymru shows data at LSOA (local area) and local authority level.
Following the 2011 Census a small number of LSOAs were changed to allow for population growth. The data is either shown for 2011 LSOA or 2001 LSOA depending on the most up to date information.
For more information on statistical geography in Wales please contact firstname.lastname@example.org.