The three seat Roscommon - Galway, with an average of 1,115.3 km2 territory
per Dail seat, and the four seat Sligo - Leitrim, with an average of 1,085.2 km2 territory per council seat, have the next highest levels.
Given that the Constitution explicitly states that the population
per TD ratio nationally (this does not apply to individual constituencies) must not exceed 30,000 (or indeed fall below 20,000), this means that the smallest number of
Dail deputies, which can be envisaged in the upcoming Constituency Commission review of / report on
Dail constituency boundaries, is 159, which is a higher number that the current membership (158 TDs) of
Dail Eireann.