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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: 28 November 2023 | Gwybodaeth gorfforaethol
Definition of Welsh reading ability, categories, and changes since the 2011 Census for use with research and analysis using Census 2021 data.
Definition of Welsh speaking ability, categories, and changes since the 2011 Census for use with research and analysis using Census 2021 data.
Definition of Welsh-speakers in household, categories, and changes since the 2011 Census for use with research and analysis using Census 2021 data.
Rhyddhawyd ar: 13 June 2025 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 02 June 2023 | Gwybodaeth gorfforaethol
Definition of proficiency in English language, categories, and changes since the 2011 Census for use with research and analysis using Census 2021 data.
Rhyddhawyd ar: 10 October 2023 | Gwybodaeth gorfforaethol
Use these groups of categories to research and analyse Census 2021 main language (detailed) data.
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: 09 February 2013 | Erthygl
Rhyddhawyd ar: 26 August 2025 | Data a gyrchwyd gan y defnyddiwr
