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Dewis pwnc arall neu clirio pob hidlydd.
Nid yw holl gynnwys y cyfrifia wedi'i ryddhau. Edrychwch am ddatganiadau sydd i ddod ar y calendr datganiadau. Fel arall, gallwch greu set ddata eich fun.
Rhyddhawyd ar: 25 September 2023 | Gwybodaeth gorfforaethol
Use these groups of categories to research and analyse Census 2021 proficiency in English language data.
Rhyddhawyd ar: 25 July 2023 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 26 June 2020 | Gwybodaeth gorfforaethol
In this section, you’ll find information on development and testing towards meeting user need for information on ethnic group, national identity, religion and language.
Rhyddhawyd ar: 16 October 2017 | Gwybodaeth gorfforaethol
Released 16 October 2017
Rhyddhawyd ar: 09 February 2013 | Erthygl
Rhyddhawyd ar: 28 November 2023 | Gwybodaeth gorfforaethol
Definition of Welsh writing ability, categories, and changes since the 2011 Census for use with research and analysis using Census 2021 data.
Rhyddhawyd ar: 26 August 2025 | Data a gyrchwyd gan y defnyddiwr
Rhyddhawyd ar: 06 September 2024 | Gwybodaeth gorfforaethol
Definition of main language (detailed), categories, and changes since the 2011 Census for use with research and analysis using Census 2021 data.
Rhyddhawyd ar: 02 September 2025 | Data a gyrchwyd gan y defnyddiwr
