Blue Earth is a city in Faribault County, Minnesota, at the confluence of the east and west branches of the Blue Earth River. The population was 3,353 at the 2010 census. It is the county seat of Faribault County. It is home to a statue of the Jolly Green Giant. Additionally, Interstate Highway 90 is centered on Blue Earth, as the east and west construction teams met here in 1978. As a tribute, there is a golden stripe of concrete on the interstate near Blue Earth. This draws a parallel to the golden spike set in the first transcontinental railroad.