In mid-2023 the estimated average household size for Wales was 2.26 persons per household, compared with 2.52 persons in mid-1991.
Yng nghanol 2023 amcangyfrifwyd mai maint cyfartalog aelwydydd yng Nghymru oedd 2.26 person fesul aelwyd o'i gymharu â 2.52 person fesul aelwyd yng nghanol 1991.