Elk Township, Warren County, Pennsylvania
|Area||43.9 sq mi (114 km2)|
|- land||41.3 sq mi (107 km2)|
|- water||2.6 sq mi (7 km2)|
|Density||13.3 / sq mi (5 / km2)|
|- summer (DST)||EDT (UTC-5)|
According to the United States Census Bureau, the township has a total area of 43.9 square miles (114 km2), of which, 41.3 square miles (107 km2) of it is land and 2.6 square miles (6.7 km2) of it (5.86%) is water.
As of the census of 2000, there were 551 people, 214 households, and 167 families residing in the township. The population density was 13.3 people per square mile (5.2/km²). There were 342 housing units at an average density of 8.3/sq mi (3.2/km²). The racial makeup of the township was 98.73% White, and 1.27% from two or more races.
There were 214 households out of which 32.7% had children under the age of 18 living with them, 72.4% were married couples living together, 2.3% had a female householder with no husband present, and 21.5% were non-families. 17.8% of all households were made up of individuals and 7.9% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 2.89.
In the township the population was spread out with 24.1% under the age of 18, 5.1% from 18 to 24, 29.2% from 25 to 44, 31.2% from 45 to 64, and 10.3% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 105.6 males. For every 100 females age 18 and over, there were 106.9 males.
The median income for a household in the township was $45,179, and the median income for a family was $48,125. Males had a median income of $35,313 versus $21,806 for females. The per capita income for the township was $20,592. About 0.6% of families and 2.0% of the population were below the poverty line, including 1.3% of those under age 18 and 3.6% of those age 65 or over.
- Thaddeus C. Pound, Lieutenant Governor of Wisconsin, and grandfather of the poet Ezra Pound, was born in Elk Township.