| St. Louis No. 431 | |
| Official Name: | Rural Municipality of St. Louis No. 431 |
| Settlement Type: | Rural municipality |
| Image Map1: | SK RM 431 St. Louis.svg |
| Mapsize1: | 200 |
| Map Caption1: | Location of the RM of St. Louis No. 431 in Saskatchewan |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Saskatchewan |
| Subdivision Type2: | Region |
| Subdivision Type3: | Census division |
| Subdivision Name3: | 15 |
| Subdivision Type4: | division |
| Subdivision Name4: | 5 |
| Subdivision Type5: | Federal riding |
| Subdivision Type6: | Provincial riding |
| Government Footnotes: | [1] |
| Leader Title: | Reeve |
| Leader Name: | Emile Boutin |
| Leader Title1: | Governing body |
| Leader Name1: | RM of St. Louis No. 431 Council |
| Leader Title2: | Administrator |
| Leader Name2: | Sindy Tait |
| Leader Title3: | Office location |
| Leader Name3: | Hoey |
| Established Title: | Formed |
| Established Title2: | Formed |
| Established Date2: | January 1, 1913 |
| Established Title3: | Name change |
| Established Title4: | Name change |
| Established Title5: | Amalgamated |
| Area Footnotes: | (2016) |
| Area Land Km2: | 790.93 |
| Population As Of: | 2016 |
| Population Total: | 1086 |
| Population Density Km2: | 1.4 |
| Timezone: | CST |
| Timezone Dst: | CST |
| Coordinates: | 52.809°N -105.996°W[2] |
| Postal Code Type: | Postal code |
| Area Code: | 306 and 639 |
| Blank Name: | Highway(s) |
| Blank1 Name: | Railway(s) |
| Blank2 Name: | Waterway(s) |
The Rural Municipality of St. Louis No. 431 (2016 population:) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 15 and Division No. 5.
The RM of St. Louis No. 431 incorporated as a rural municipality on January 1, 1913.[3]
The following urban municipalities are surrounded by the RM.
The following unincorporated communities are within the RM.
In the 2021 Census of Population conducted by Statistics Canada, the RM of St. Louis No. 431 had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of 777.51km2, it had a population density of in 2021.[5]
In the 2016 Census of Population, the RM of St. Louis No. 431 recorded a population of living in of its total private dwellings, a change from its 2011 population of . With a land area of 790.93km2, it had a population density of in 2016.[6]
The RM of St. Louis No. 431 is governed by an elected municipal council and an appointed administrator that meets on the first Wednesday of every month.[1] The reeve of the RM is Emile Boutin while its administrator is Sindy Tait.[1] The RM's office is located in Hoey.[1]