4 (2016 population: 368) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

Located in the southeast portion of the province, it is adjacent to the United States, neighbouring Burke County, North Dakota.

It travels from Roche Percée in the west straight across to the east into the neighbouring RM of Enniskillen No.

4 is governed by an elected municipal council and an appointed administrator that meets on the third Thursday of every month.

[3] Roche Percee Recreation Site (49°04′34″N 102°44′55″W / 49.0762°N 102.7485°W / 49.0762; -102.7485)[8] is a provincial campground in the RM of Coalfields along the Souris River.

The campground has non-electric sites, non-potable water, sewer disposal, and portable toilets.