Elsewhere in the division, Dunfermline and Arbroath begin a triple-header against each other.
They will meet twice next week in the quarter-finals of the Premiership play-offs – live across BBC Scotland on Tuesday and Friday.
Before then, they face off to decide who will finish third and have home advantage in the second leg of the play-off. If Arbroath avoid defeat, it will be them.
Partick Thistle are assured of second place and lie in wait in the play-off semi-final.
The Firhill side will have 10 days to recharge after they play Queen’s Park, who know that victory would see them finish fifth if Raith lose against County.
Champions St Johnstone, meanwhile, sign off their triumphant campaign with a visit to seventh placed Ayr United.
