This is a dataset of vital statistics and cohort component population estimates at a spatially-disaggregated level for the island of Ireland for the period 1911-1920. The raw data were digitised by the authors using official UK government statistics. The population estimates were then derived by the cohort component method. These data provide novel intercensal population estimates at the county level that will be beneficial for researchers working in historical demography, as well as in economic and social history. The data provided can be readily reused and extended by other researchers to produce further series and indicators.

Manual digitisation of official statistics published in British Parliamentary Papers (BPP). Data sources digitised: BPP (1901). Census of Ireland Part I: Area, Houses, and Population. Dublin, HM Stationery Office [Cd. 847]. BPP (1907). Forty-third detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1906. Dublin, HM Stationery Office [Cd. 3663]. BPP (1912a). Emigration statistics of Ireland for the year 1911. Dublin, HM Stationery Office. [Cd. 6131]. BPP (1912b). Forty-eighth detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1911. Dublin, HM Stationery Office. [Cd. 6313.] BPP (1913a). Census of Ireland, 1911. General report with tables and appendix. Dublin, HM Stationery Office. [Cd. 6663.] BPP (1913b). Emigration statistics of Ireland for the year 1912. Dublin, HM Stationery Office. [Cd. 6727]. BPP (1913c). Forty-ninth detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1912. Dublin, HM Stationery Office. [Cd. 6917.] BPP (1914a). Emigration statistics of Ireland for the year 1913. Dublin, HM Stationery Office. [Cd. 7313]. BPP (1914b). Fiftieth detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1913. Dublin, HM Stationery Office. [Cd. 7528.] BPP (1915a). Emigration statistics of Ireland for the year 1914. Dublin, HM Stationery Office. [Cd. 7883]. BPP (1915b). Fifty-first detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1914. Dublin, HM Stationery Office. [Cd. 7991.] BPP (1916a). Emigration statistics of Ireland for the year 1915. Dublin, HM Stationery Office. [Cd. 8230]. BPP (1916b). Statement giving the particulars regarding men of military age in Ireland. Dublin, HM Stationery Office. [Cd. 8390.] BPP (1916c). Fifty-second detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1915. Dublin, HM Stationery Office. [Cd. 8416.] BPP (1917a). Census of England and Wales 1911. General Report with Appendices. London, HM Stationery Office. [Cd. 8491.] BPP (1917b). Emigration statistics of Ireland for the year 1916. Dublin, HM Stationery Office. [Cd. 8520]. BPP (1917c). Fifty-third detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1916. Dublin, HM Stationery Office. [Cd. 8647.] BPP (1918a). Emigration statistics of Ireland for the year 1917. Dublin, HM Stationery Office. [Cd. 9013]. BPP (1918b). Fifty-fourth detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1917. Dublin, HM Stationery Office. [Cd. 9123.] BPP (1919a). Emigration statistics of Ireland for the year 1918. Dublin, HM Stationery Office. [Cmd. 77]. BPP (1919b). Fifty-fifth detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1918. Dublin, HM Stationery Office. [Cmd. 450.] BPP (1920b). Emigration statistics of Ireland for the year 1919. Dublin, HM Stationery Office. [Cmd. 721]. BPP (1920c). Fifty-sixth detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1919. Dublin, HM Stationery Office. [Cmd. 997.] BPP (1921a). General Annual Reports on the British Army for the period from 1 October 1913, to 30 September 1919. Dublin, HM Stationery Office. [Cmd. 1193.] BPP (1921b). Fifty-seventh detailed annual report of the Registrar General for Ireland containing a general abstract of the numbers of marriages, births and deaths registered in Ireland during the year 1920. [Cmd. 1532.] Department of Social Welfare (1955). Report of Commission on Emigration and Other Population Problems, 1948-1954. Dublin, Stationery Office. R. 84 (Pr. 2541). Government of Northern Ireland (1929). Census of Population of Northern Ireland 1926: General Report. Belfast, HM Stationery Office. Roinn Tionscail agus Tráchtála (1928). Census of Population 1926 Vol. 1: Population, Area and Valuation of Each District Electoral Division and of Each Large Unit of Area. Dublin, The Stationery Office. Roinn Tionscail agus Tráchtála (1929). Census of Population 1926 Vol. V, Part I: Ages, Orphanhood and Conjugal Conditions. Dublin, The Stationery Office. War Office (1922). Statistics of the Military Effort of the British Empire during the Great War, 1914-1920. London, HM Stationery Office.