The total value of card transactions, including cash withdrawals, totaled about 6.8 billion per month.
Customers in Offaly are the least likely in the country to pay with card.
New data from the Central Bank shows the county ranks last in terms of traditional card and contactless payments.
It also ranks third last in terms of cash withdrawals, where Westmeath is bottom of the list.
Laois is middle of the pack in all three categories.
Customers in Offaly use their card for the least amount of payments in the country.
The total value of card transactions, including cash withdrawals, totaled about 6.8 billion per month.