305 (2016 population: 325) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

[2] The following rivers, lakes and streams are located in the RM.

In the 2021 Census of Population conducted by Statistics Canada, the RM of Invermay No.

305 is governed by an elected municipal council and an appointed administrator that meets on the second Wednesday of every month.

[3] The reeve of the RM is Bev Whyatt while its administrator is Dana Jack.