This area differs from the Garda "metropolitan region" scope, in that it stretches approximately 20 km further west.

The Dublin "Hinterland" area is aligned with the Draft National Planning Framework, which defines city regions or urban hinterlands as those EDs where at least 15% of the workforce (Full POWCAR) are employed in the Dublin Metropolitan Area (NTA boundary).

[4] The urban part of Dublin and surrounding areas has been defined by various statutory instruments, mainly those referring to the Garda Síochána and Courts of the Republic of Ireland.

[4] On 1 December 2009 the DTO became the National Transport Authority, with a remit expanding beyond the Greater Dublin Area.

[10] The figures are based on a regional breakdown of previously published national population projections and assume that current demographic trends will continue.

[11] The boundaries for suburbs are not legally defined, but drawn and revised by the CSO in accordance with United Nations recommendations.