The Rural Municipality of Mayfield No. 406 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 16 and Division No. 6.
The RM of Mayfield No. 406 incorporated as a rural municipality on December 13, 1909. The RM's name is a portmanteau of Maymont and Fielding.
The following urban municipalities are surrounded by the RM.
The following unincorporated communities are within the RM.
Glenburn Regional Park () is a regional park in the RM of Mayfield on the north bank of North Saskatchewan River about south of the village of Maymont. The park is near the location of the former Maymont Ferry, which operated crossing the North Saskatchewan River from 1926 to 1975. Access to the park is from Highway 376.
The park has a campground with 61 campsites, ball diamonds, a 3-hole grass greens golf course, disc golf, a man-made swimming pool that is spring fed, access to the river, and hiking trails.
In the 2021 Census of Population conducted by Statistics Canada, the RM of Mayfield No. 406 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 Mayfield No. 406 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 Mayfield No. 406 is governed by an elected municipal council and an appointed administrator that meets on the second Wednesday of every month. The reeve of the RM is Craig Hamilton while its administrator is Brenda Appleton. The RM's office is located in Maymont.