Dáil Éireann - Volume 249 - 19 November, 1970
Written Answers. - County Donegal Population.
Mr. Harte Mr. Harte
88. Mr. Harte asked the Taoiseach the population of County Donegal at 30th September, 1932, at the same date in 1948 and 1956, and at the latest date for which figures are available.
The Taoiseach Jack Lynch
The Taoiseach: Population figures for counties are available only from the periodic Censuses of Population.  The population of County Donegal at each census since the State was established was as follows:
Dáil Éireann 249 Written Answers. County Donegal Population.