Kimberly is a city in Twin Falls County, Idaho, United States. The population was 3,264 at the 2010 census, up from 2,614 in 2000. It is part of the Twin Falls Metropolitan Statistical Area. Kimberly was founded in 1905. It is named after Peter L. Kimberly, a major investor in the construction of Milner Dam which made commercial irrigation practical in the area.