Dublin City Council
It is the largest Local Authority in Ireland with a population of over 500,000 people. The city lies around the mouth of the river Liffey and along Dublin Bay.
South Dublin County Council
It has an area of 222.74 square kilometres and a population of 265,205 according to the 2011 census. It is bounded by Dublin city the Dublin Mountains and County Wicklow to the south, the River Liffey to the north separating it from Fingal and County Kildare to the west.
Fingal County Council
Fingal is located to the north of Dublin City and is also bordered by South County Dublin, Meath and Kildare, and to the east by the Irish Sea. The county covers an area of c. 448
Dún Laoghaire-Rathdown County Council
Dun Laoghaire Rathdown County is located between the outer suburbs of Dublin City and the Dublin/Wicklow Mountains on the East Coast of Ireland. It covers the electoral areas of Dundrum, Glencullen, Stillorgan, Blackrock, Dun Laoghaire and Ballybrack. Its population is approximately 207,000 people.