A new geographic hierarchy designed to improve the reporting of small area statistics in England and Wales. The layers of SOA are:
http://www.statistics.gov.uk/geography/soa.asp#3layers Names and codes for Super Output Area geography.
Minimum population 1 000; mean 1 500. Built from groups of OAs (typically 4 to 6) and constrained by the boundaries of the Standard Table (ST) wards used for 2001 Census outputs.
Minimum population 5 000; mean 7 200. Built from groups of lower layer SOAs and constrained by the 2003 local authority boundaries used for 2001 Census outputs.
To be determined; minimum size c.25 000.
Subjects: Earth Sciences and Geography.