In modren Inglis thou continues tae be uised in some o the regional byleids o Ingland, some releegious contexts (referrin tae God whan caipitalized) an in certain speceefic phrases, e.g. "holier than thou", "fare thee well". Than, its contemporary uiss is an archaism.
Thou in Scots 
Orkney* yet (the yoch) uises wirds sic as thoo, thee, an thou. Ither aulder Scots furms includes ȝe, ȝow, thowe, thoue, an thous.