|County||Lewis and Clark|
|• Total||0.92 sq mi (2.39 km2)|
|• Land||0.92 sq mi (2.39 km2)|
|• Water||0.0 sq mi (0.0 km2)|
|Elevation||4,068 ft (1,240 m)|
|• Density||335/sq mi (129.3/km2)|
|Time zone||UTC-7 (Mountain (MST))|
|• Summer (DST)||UTC-6 (MDT)|
|GNIS feature ID||0800366|
Augusta is an unincorporated community and census-designated place (CDP) in Lewis and Clark County, Montana, United States. The population was 309 at the 2010 census. The most accepted version in the naming of this town is after Augusta Hogan, thought to be the first child born in this town, the daughter of J. D. Hogan, an early rancher.
The original townsite was dedicated on May 8, 1893. A fire on April 4, 1901, destroyed part of the town.
Augusta is located in northern Lewis and Clark County at  on the north side of Elk Creek (or the South Fork of the Sun River), which flows out of the Lewis and Clark Range to the southwest and leads northeast to the Sun River, part of the Missouri River watershed.(47.490892, -112.394181),
U.S. Route 287 passes through Augusta as the northern part of its Main Street, and leads north 26 miles (42 km) to its northern terminus at Choteau and south 38 miles (61 km) to Interstate 15 near Wolf Creek. Helena, the state capital, is 76 miles (122 km) south of Augusta via US 287 and I-15. Montana Highway 21 leads east from Augusta 22 miles (35 km) to Simms and is the first in a series of highways that lead east 54 miles (87 km) to Great Falls.
As of the census of 2000, there were 284 people, 142 households, and 83 families residing in the CDP. The population density was 509.1 people per square mile (195.8/km2). There were 193 housing units at an average density of 346.0 per square mile (133.1/km2). The racial makeup of the CDP was 92.61% White, 2.46% Native American, 1.41% from other races, and 3.52% from two or more races. Hispanic or Latino of any race were 1.76% of the population.
There were 142 households, out of which 19.0% had children under the age of 18 living with them, 48.6% were married couples living together, 6.3% had a female householder with no husband present, and 41.5% were non-families. 38.7% of all households were made up of individuals, and 19.0% had someone living alone who was 65 years of age or older. The average household size was 2.00 and the average family size was 2.63.
In the CDP, the population was spread out, with 19.4% under the age of 18, 4.2% from 18 to 24, 16.9% from 25 to 44, 33.5% from 45 to 64, and 26.1% who were 65 years of age or older. The median age was 50 years. For every 100 females, there were 104.3 males. For every 100 females age 18 and over, there were 112.0 males.
The median income for a household in the CDP was $24,688, and the median income for a family was $30,956. Males had a median income of $23,125 versus $15,536 for females. The per capita income for the CDP was $14,608. About 9.6% of families and 14.7% of the population were below the poverty line, including 27.5% of those under the age of eighteen and 6.1% of those 65 or over.
- "Total Population: 2010 Census DEC Summary File 1 (P1), Augusta CDP, Montana". data.census.gov. U.S. Census Bureau. Retrieved April 23, 2020.
- Carkeek Cheney, Roberta (1983). Names on the Face of Montana. Missoula, Montana: Mountain Press Publishing Company. p. 10. ISBN 0-87842-150-5.
- "Montana Place Names Companion". Montana Historical Society. Retrieved 20 June 2017.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "U.S. Gazetteer Files: 2019: Places: Montana". U.S. Census Bureau Geography Division. Retrieved April 23, 2020.
- Climate Summary for Augusta, Montana
- "U.S. Census website". United States Census Bureau. Retrieved 2008-01-31.
- "Augusta Public Schools". Augusta Public Schools. Retrieved 2020-04-08.
- "Member Schools". Montana High School Association. Retrieved 19 April 2021.
- "Montana Public Libraries". PublicLibraries.com. Retrieved 14 June 2019.