There has also been a decrease in the numbers and percentage of males aged three years or older who are able to speak Welsh, which fell from 261,720 (18.1%) in 2011 to 249,750 (16.9%) in 2021.
Bu hefyd ostyngiad yn niferoedd a chanran y dynion tair oed neu'n hŷn sy'n gallu siarad Cymraeg o 261,720 (18.1%) yn 2011 i 249,750 (16.9%) yn 2021.