The Rural Municipality of Willow Bunch No. 42 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 3 and Division No. 2. It is located in the south central portion of the province.
The RM of Willow Bunch No. 42 incorporated as a rural municipality on November 21, 1912.
There is one historical building located within the RM.
The following urban municipalities are surrounded by the RM.
The following unincorporated communities are within the RM.
Jean Louis Legare Regional Park () is a regional park in the RM of Willow Bunch, south-west of Willow Bunch in the Big Muddy Valley. Established in 1961, the park was named after Jean-Louis Légaré, who was one of the original settlers of Willow Bunch. The park has a campground, golf course, a picnic area, and hiking trails. The trails go through the coulees and valleys of the Big Muddy Valley. Access to the park is from Highway 36.
The campground has 45 campsites (41 of which have electric hookups), washrooms, showers, and a sani-dump. The Willow Bunch Golf Course is a par 36, 9-hole, grass greens course with 3,176 total yards. There is a licensed clubhouse with cart and club rentals.
In the 2021 Census of Population conducted by Statistics Canada, the RM of Willow Bunch No. 42 had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021.
In the 2016 Census of Population, the RM of Willow Bunch No. 42 recorded a population of living in of its total private dwellings, a change from its 2011 population of . With a land area of , it had a population density of in 2016.
The RM of Willow Bunch No. 42 is governed by an elected municipal council and an appointed administrator that meets on the second Monday of every month. The reeve of the RM is Denis Bellefleur while its administrator is Sharleine Eger. The RM's office is located in Willow Bunch.
The RM is a part owner of the Fife Lake Railway. The Willow Bunch Airport was an airport located within the municipality. The airport closed in 2009.