| Date | | | |
| 18-Apr-1926 | | Census of the Population of Dublin taken Number of inhabitants within the Municipal area, 316,471. | |
| 10-Jul-1927 | | Mr. Kevin O'Higgins, Minister for Justice and Vice-President of the Executive Council, assassinated at Booterstown-avenue. Co. Dublin. | |
| 13-Jul-1927 | | Public Funeral of Mr. Kevin O'Higgins. | |
| 11-Aug-1927 | | Mr. E. de Valera and Party take the Treaty Oath. They enter the Dail and take their seats. | |
| 9-Sep-1927 | 17 | Civic week held for First time in Dublin. | |
| 2-Dec-1927 | | Second Free State Loan floated for £7,089,175, and was oversubscribed. $4,006,925 in the Irish Free State and £3,082,250 or $15,000,000 dollars in America. | |
| 15-Dec-1927 | | Mr. James MacNeill, High Commissioner in London appointed Governor-General of the Irish Free State on retirement of His Excellency Timothy Michael Healy. | |
| 1-Feb-1928 | | James MacNeill sworn in as Governor-General of the Irish Free State before the Chief Justice. | |
| 11-Aug-1928 | | The Second Aonach Tailteann opened at Croke Park. The games and contests continued until the 27th. | |
| 30-Aug-1928 | | Mr. Frank Billings Kellogg, Secretary of State, United States America, arrived in Dublin and was accorded a public welcome, and was presented with the Freedom of the City. | |