Nodyn:Profi nodyn
Mae fy {{{1}}} yn well na dy {{{1}}}, ac yn well na {{{1}}} Dafydd.
| Blwyddyn | Poblogaeth yr Alban | Siaradwyr Gaeleg uniaith | Siaradwyr Gaeleg a Saesneg dwyieithog | Cyfanswm siaradwyr Gaeleg | |||
|---|---|---|---|---|---|---|---|
| 1755 | 1,265,380 | 289,798 | 22.9% | Anhysbys | Anhysbys | ||
| 1800 | 1,608,420 | 297,823 | 18.5% | Anhysbys | Anhysbys | ||
| 1881 | 3,735,573 | 231,594 | 6.1% | Anhysbys | Anhysbys | ||
| 1891 | 4,025,647 | 43,738 | 210,677 | 5.2% | |||
| 1901 | 4,472,103 | 28,106 | 202,700 | 4.5% | |||
| 1911 | 4,760,904 | 8,400 | 183,998 | 3.9% | |||
| 1921 | 4,573,471 | 9,829 | 148,950 | 3.3% | |||
| 1931 | 4,588,909 | 6,716 | 129,419 | 2.8% | |||
| 1951 | 5,096,415 | 2,178 | 93,269 | 1.8% | |||
| 1961 | 5,179,344 | 974 | 80,004 | 1.5% | |||
| 1971 | 5,228,965 | 477 | 88,415 | 1.7% | |||
| 1981 | 5,035,315 | — | 82,620 | 1.6% | 82,620 | 1.6% | |
| 1991 | 5,083,000 | — | 65,978 | 1.4% | 65,978 | 1.4% | |
| 2001 | 5,062,011 | — | 58,652 | 1.2% | 58,652 | 1.2% | |
| 2011 | 5,295,403 | — | 57,602 | 1.1% | 57,602 | 1.1% | |