The English indices of deprivation have, since 2004, been produced at lower level super output area (LSOA) level. LSOAs are smaller than constituencies and are designed to remain consistent in size, and over time, to allow more detailed identification of pockets of deprivation. This also overcomes difficulties in producing statistics for electoral wards and parliamentary constituencies which are associated with frequent boundary changes. There are 32,482 LSOAs in England with an average population of 1,500 people.
The income deprivation affecting children index (IDACI) and the income deprivation affecting older people index (IDAOPI) were also produced for each LSOA in England. These can be downloaded from the CLG website:
Summary measures for larger areas, such as local authority districts or parliamentary constituencies, are not produced for the IDACI and IDAOPI.