Augusta is a census-designated place (CDP) in Lewis and Clark County, Montana, United States. The population was 284 at the 2000 census. It is named after the daughter of D. J. Hogan, an early rancher.
Augusta is part of the Helena Micropolitan Statistical Area.
Augusta is located at 47°29′27″N 112°23′39″W / 47.49083°N 112.39417°W / 47.49083; -112.39417 (47.490892, -112.394181).