Snake Spring Township is located in east-central Bedford County, between the boroughs of Bedford and Everett. The townships borders follow mountain ridges on three sides: Tussey Mountain on the east, Evitts Mountain on the west, and a lower ridge connecting the two in the north. The Raystown Branch of the Juniata River flows west to east through the southern part of the township, cutting water gaps through Evitts Mountain and Tussey Mountain. The Pennsylvania Turnpike and the older Lincoln Highway follow the river and pass through the water gaps. According to the United States Census Bureau, the township has a total area of, of which is land and, or 0.71%, is water.
Snake Spring valley is an anticlinal valley, with Evitts Mountain and Tussey Mountain forming the limbs. The SilurianTuscarora Formation, a hard sandstone, outcrops at the crests of the ridges and is stratigraphically higher and thus younger than the rest of the bedrock in the valley. The low knobs or "benches" on the northwest side of Tussey Mountain and the southeast side of Evitts Mountain are formed by the OrdovicianBald Eagle Formation, another sandstone, that is stratigraphically below the Tuscarora. The two mountains nearly converge at the north end of the township. The rock formations in the valley range from Ordovician shales and limestones to the CambrianWarrior Formation, another sandstone. The limestones can form sinkholes.
As of the census of 2000, there were 1,482 people, 552 households, and 432 families residing in the township. The population density was 57.5 people per square mile. There were 652 housing units at an average density of 25.3/sq mi. The racial makeup of the township was 98.11% White, 0.20% African American, 0.20% Native American, 0.54% Asian, 0.40% from other races, and 0.54% from two or more races. Hispanic or Latino of any race were 0.20% of the population. There were 552 households, out of which 28.8% had children under the age of 18 living with them, 70.5% were married couplesliving together, 5.6% had a female householder with no husband present, and 21.7% were non-families. 18.7% of all households were made up of individuals, and 9.4% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 2.82. In the township the population was spread out, with 18.9% under the age of 18, 5.8% from 18 to 24, 25.7% from 25 to 44, 26.0% from 45 to 64, and 23.6% who were 65 years of age or older. The median age was 45 years. For every 100 females there were 93.2 males. For every 100 females age 18 and over, there were 92.3 males. The median income for a household in the township was $36,389, and the median income for a family was $38,289. Males had a median income of $32,159 versus $17,772 for females. The per capita income for the township was $16,801. About 4.4% of families and 6.3% of the population were below the poverty line, including 6.3% of those under age 18 and 6.5% of those age 65 or over.
