The Central Statistics Office (CSO) says the eastern and midlands' regions are more wealthy than the north and west.
That is based on a 2018 household finance and consumption survey.
It found that average net wealth has increased by 80.2% since 2013, with Irish households having a median net wealth of €184,900.
The value of a residence is seen as a key component of wealth.
The average value of a households' main residence is €250,000 - up from €150,000 in 2013.
It found that net wealth is highest in the eastern and midlands regions, with a median value of €212,700.
This is compared to €189,700 in the south, and €146,900 in the north and west.
The results show that in Ireland, the wealthiest 10% of all households have a net wealth greater than €835,000 - while the bottom 10% have a net wealth of less than €1,000.
Source: CSONet wealth is calculated as the value of all assets minus debt.
Just over half of all households have some form of debt - including mortgages, loans, credit cards and overdrafts - down from 56.8% in 2013.
And over two-thirds of the wealthiest 10% of households have received a "substantial" inheritance or gift.
However, this varies depending on how wealthy a household is.
Almost 68% of the wealthiest 10% of households received a substantial inheritance or gift - but this drops to just over 10.3% for the 10% with the lowest net wealth.
In Ireland, 69.5% of households own their own residence.
The median net wealth of households that own their own home is €287,300 - while for renters it is considerably less at €5,900.
More than nine out of every 10 households own some form of financial asset including savings, shares, bonds, investments and voluntary pensions.
In 2013, 31.9% of all homes owned with a mortgage were in negative equity - whereas the 2018 rate is 3.9%.
