The Rural Municipality of Big Arm No. 251 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 11 and Division No. 5. It is located in the southern portion of the province near Last Mountain Lake northwest of Regina.
History The RM of Big Arm No. 251 incorporated as a rural municipality on December 11, 1911.
Geography
Communities and localities The following urban municipalities are surrounded by the RM.
Towns Imperial
Villages Liberty
Resort villages Etters Beach
The following unincorporated communities are located within the RM:
Unincorporated hamlets Hendersons Beach Stalwart
Protected areas There are two National Wildlife Areas at least partially within the RM as well as one Migratory Bird Sanctuary. The overlapping Last Mountain Lake Bird Sanctuary and Last Mountain Lake National Wildlife Area encompass the northern end of Last Mountain Lake with the south-west corner of the protected areas being within the north-east corner of the RM of Big Arm.
Stalwart National Wildlife Area is entirely within the RM.
Demographics
In the 2021 Census of Population conducted by Statistics Canada, the RM of Big Arm No. 251 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 Big Arm No. 251 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.
Government The RM of Big Arm No. 251 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 Sheldon Vance while its administrator is Yvonne (Bonny) Goodsman. The RM's office is located in Imperial.
References