Output Area (OA)

A level of geography particular to the UK census, which is managed by the Office of National Statistics in England and Wales, and by its counterpart organisations in Scotland and Northern Ireland. Output areas (OAs) are created for Census data, specifically for the output of census estimates. The OA is the lowest geographical level at which census estimates are provided. Groups of OAs are also grouped into Super Output Areas (SOAs) and Lower Super Output Areas (LSOAs).