Clay Township, Huntingdon County, Pennsylvania

[2] According to the United States Census Bureau, the township has a total area of 28.2 square miles (73 km2), all land.

At the 2000 census there were 920 people in 370 households, including 283 families, in the township.

The population density was 32.6 inhabitants per square mile (12.6/km2).

[4] There were 370 households, 31.6% had children under the age of 18 living with them, 66.5% were married couples living together, 5.7% had a female householder with no husband present, and 23.5% were non-families.

20.0% of households were made up of individuals, and 10.3% were one person aged 65 or older.