Dublin and the Midwest have the highest levels of disposable income, according to the latest figures released by the Central Statistics Office.
Dublin also accounted for 42%of the State's total gross domestic product of €173bn in 2012.
The CSO defines "disposable income" as a person's total income, minus taxes and social insurance contributions.
When broken into eight different regions, the Dublin area remained the highest at €22,000, while the Midwest came in at second and was the only other region to climb above the national disposable income average, with €19,701 per person.
The area with the lowest average disposable income was the Border region at €17,126, which accounts for counties Cavan, Donegal, Leitrim, Louth, Monaghan and Sligo.