The Idaho Falls Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of three counties in eastern Idaho, anchored by the city of Idaho Falls. As of the 2020 census, the MSA had a population of 154,855. It is just north of the Pocatello, Idaho Metropolitan Area.

Eastern Idaho is the area of Idaho lying east of the Magic Valley region. Much of the region is in the Mormon Corridor, and the Church of Jesus Christ of Latter-day Saints plays a major role in the lives of the region's residents.