The Boundaries of Community Wards could also be changed, along with the electoral arrangements of Town or Community Councils, for example the number of Councillors which are elected to councils.
Mae Ffiniau Wardiau Cymunedol hefyd yn agored i newid, ynghyd â threfniadau etholiadol Cynghorau Tref neu Gymuned, er enghraifft nifer y Cynghorwyr sy'n cael eu hethol i gynghorau.