Allardt is a city in Fentress County, Tennessee, United States. The population was 555 at the 2020 census. The current mayor Mrs. Yvonne M. Gernt was elected in 2022. According to the city charter, there are four city council board members, currently (as of 2025) Michael Wiley, Richmond Smith, Joshua Young, and William Bilbrey.
History
After 1880, M.H. Allardt and Bruno Gernt brought a group of Germans from Michigan to settle in the area. The town was incorporated in 1964.
Geography
According to the United States Census Bureau, the city has a total area of , all of it land. The city is situated atop the western Cumberland Plateau in a relatively broad area surrounded by rugged hills. Tennessee State Route 52 passes roughly west-to-east through the city, connecting it with Jamestown to the northwest and Rugby to the east. State Route 296 intersects State Route 52 near the center of Allardt, and continues directly westward to U.S. Route 127.
Colditz Cove State Natural Area, best known for the Northrup Falls, lies just southeast of Allardt. The Big South Fork National River and Recreation Area lies a few miles to the northeast.
Demographics
2020 census
{| class="wikitable"
|+ Racial composition as of the 2020 census
! Race !! Number !! Percent
|-
| White || 538 || 96.9%
|-
| Black or African American || 2 || 0.4%
|-
| American Indian and Alaska Native || 0 || 0.0%
|-
| Asian || 0 || 0.0%
|-
| Native Hawaiian and Other Pacific Islander || 0 || 0.0%
|-
| Some other race || 0 || 0.0%
|-
| Two or more races || 15 || 2.7%
|-
| Hispanic or Latino (of any race) || 0 || 0.0%
|}
As of the 2020 census, Allardt had a population of 555, with 266 households and 171 families residing in the city. The median age was 54.8 years. 17.8% of residents were under the age of 18 and 32.1% of residents were 65 years of age or older. For every 100 females there were 83.8 males, and for every 100 females age 18 and over there were 78.8 males age 18 and over.
0.0% of residents lived in urban areas, while 100.0% lived in rural areas.
Of the households, 23.2% had children under the age of 18 living in them. Of all households, 52.9% were married-couple households, 12.5% were households with a male householder and no spouse or partner present, and 29.7% were households with a female householder and no spouse or partner present. About 30.4% of all households were made up of individuals and 17.9% had someone living alone who was 65 years of age or older.
Climate
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Allardt has a humid subtropical climate, abbreviated "Cfa" on climate maps.