Juniata Township is a township that is located in Huntingdon County, Pennsylvania, United States. The population was 433 at the time of the 2020 census.
According to the United States Census Bureau, the township has a total area of , of which is land and (17.85%) is water.
All municipalities are located in Huntingdon County unless otherwise noted.
At the 2010 census there were 554 people and 235 households within the township.
The population density was . There were 451 housing units at an average density of 21.3/sq mi (8.2/km).
The racial makeup of the township was 99.46% White, 0.18% African American, 0.18% Asian, and 0.18% from two or more races. Hispanic or Latino of any race were 0.18%.
There were 235 households; 26.0% had children under the age of eighteen living with them, 67.0% were married couples living together, 3.6% had a female householder with no husband present, and 26.8% were non-families. 23.2% of households were made up of individuals, and 9.8% were one-person households with a resident aged sixty-five or older.
The average household size was 2.46 and the average family size was 2.87.
The age distribution was 18.4% under the age of eighteen, 2.2% from eighteen to nineteen, 5.4% from twenty to twenty-four, 6.9% from twenty-five to thirty-four, 19.9% from thirty-five to forty-nine, 25.3% from fifty to sixty-four, and 22.0% who were aged sixty-five or older. The median age was forty years. The population was 49.10% male, and 50.90% female.