Key West No. 70 is a rural municipality in the Canadian province of Saskatchewan. There are 309 people who live there. The total area of Key West No. 70 is 825.26 square kilometres (318.6 sq mi). The population density is 0.4 people per square kilometer. There are 133 private dwellings in Key West No. 70 occupied by usual residents and 152 private dwellings total. Key West No. 70 is in SARM Division No.