The 2006 census reported that residents tended to have higher-than-average levels of educational attainment, especially in terms of third-level qualifications, and were much more likely to work in professional and managerial positions.

[9] "Volatile, unpredictable and utterly ruthless, Dublin South voters have hired and fired TDs with abandon over the years" – The Irish Times description of the constituency in August 2012.

[17] Ballinteer-Broadford, Ballinteer-Ludford, Ballinteer-Marley, Ballinteer-Meadowbroads, Ballinteer-Meadowmount, Ballinteer-Woodpark, Churchtown-Castle, Churchtown-Landscape, Churchtown-Nutgrove, Churchtown-Orwell, Churchtown-Woodlawn, Clonskeagh-Farranboley, Clonskeagh-Milltown, Clonskeagh-Roebuck, Clonskeagh-Windy Arbour, Dundrum-Balally, Dundrum-Kilmacud, Dundrum-Sandyford, Dundrum-Sweetmount, Dundrum-Taney, Glencullen, Stillorgan-Deerpark, Stillorgan-Kilmacud, Tibradden; Ballyboden, Edmondstown, Firhouse-Ballycullen, Firhouse-Knocklyon, Firhouse Village, Rathfarnham-Ballyroan, Rathfarnham-Butterfield, Rathfarnham-Hermitage, Rathfarnham-St. Enda's, Rathfarnham Village; transfer of part of Glencullen from Dún Laoghaire.

[20] Ballinteer-Broadford, Ballinteer-Ludford, Ballinteer-Marley, Ballinteer-Meadowbroads, Ballinteer-Meadowmount, Ballinteer-Woodpark, Churchtown-Castle, Churchtown-Landscape, Churchtown-Nutgrove, Churchtown-Orwell, Churchtown-Woodlawn, Clonskeagh-Belfield, Clonskeagh-Farranboley, Clonskeagh-Milltown, Clonskeagh-Roebuck, Clonskeagh-Windy Arbour, Dundrum-Balally, Dundrum-Kilmacud, Dundrum-Sandyford, Dundrum-Sweetmount, Dundrum-Taney, Glencullen, Stillorgan-Deerpark, Stillorgan-Kilmacud, Stillorgan-Merville, Stillorgan-Mount Merrion, Tibradden; and that part of the electoral division of Cabinteely-Loughlinstown situated west of a line drawn along the road from Carrickmines to Kiltiernan; Ballyboden, Edmondstown, Firhouse-Ballycullen, Firhouse-Knocklyon, Rathfarnham-Ballyroan, Rathfarnham-Butterfield, Rathfarnham-Hermitage, Rathfarnham-St. Enda's, Rathfarnham Village; and that part of the electoral division of Firhouse-Village situated north-east of a line drawn as follows— transfer of area around Firhouse and Bohernabreena area to Dublin South-West.

[22] Ballinteer-Broadford, Ballinteer-Ludford, Ballinteer-Marley, Ballinteer-Meadowbroads, Ballinteer-Meadowmount, Ballinteer-Woodpark, Churchtown-Castle, Churchtown-Landscape, Churchtown-Nutgrove, Churchtown-Orwell, Churchtown-Woodlawn, Clonskeagh-Belfield, Clonskeagh-Farranboley, Clonskeagh-Milltown, Clonskeagh-Roebuck, Clonskeagh-Windy Arbour, Dundrum-Balally, Dundrum-Kilmacud, Dundrum-Sandyford, Dundrum-Sweetmount, Dundrum-Taney, Glencullen, Stillorgan-Deerpark, Stillorgan-Kilmacud, Stillorgan-Merville, Stillorgan-Mount Merrion, Tibradden; and that part of the electoral division of Cabinteely-Loughlinstown situated west of a line drawn along the road from Carrickmines to Kiltiernan; with remainder reconstituted as Dublin Rathdown Note: The columns in this table are used only for presentational purposes, and no significance should be attached to the order of columns.

Following the appointment of Cumann na nGaedheal TD Hugh Kennedy as Chief Justice, a by-election was held on 18 November 1924.

Following the death of Cumann na nGaedheal TD Philip Cosgrave, a by-election was held on 12 March 1924.

Kenneth Reddin, an election agent, published a sample ballot incorrectly stating that voters had only six preferences.

[74] Markievicz secured an injunction in the Republican Supreme Court against Reddin, who published an apology on election day in The Irish Times.