The Register of Geographic Codes (RGC) is a key product that contains the definitive list of UK statistical geographies. ONS maintains the definitive set of statistical geographies, coordinates the issue of new codes, and maintains the relationship between active and archived code ranges on behalf of the Government Statistical Service. The RGC should be used in conjunction with the Code History Database, available to download separately.
Updates to the Parent Codes for ONS owned and Live instances:
MSOAs (E02) with Local Authority District (2011) Code.
EERs (E15), Registration Districts (E28), Travel to Work Areas (E30), Built-up Areas (E34) with Country.
Census Merged Wards (E36) with Census Merged LADs.
Census Merged LADs (E41) and Census Merged Counties (E42) with Country.
Non-Civil Parished Areas (E43) with Local Authority Code.
Local Planning Authorities (E60) and Greater London Authority (E61) with Region.
Travel to Work Areas (K01) with England and Wales (K04000001).
Built-up Areas (K05) with England and Wales (K04000001).
Travel to Work Areas (N12) and Local Planning Authorities (N13) with Country.
Travel to Work Areas (S22) and Local Planning Authorities (S44) with Country.
Registration Districts (W20), Travel to Work Areas (W22), Built-up Areas (W37) with Country.
Census Merged Wards (W39) with Census Merged LADs.
Census Merged LADs (W40) and Local Planning Authorities (W43) with Country.
