Adams Township is located in the southeast corner of Cambria County at 40.392581, -78.542633, approximately east of Johnstown. According to the United States Census Bureau, the township has a total area of, of which is land and, or 0.26%, is water. The elevation rises to more above sea level in the southeast part of the township, on Pot Ridge near the crest of the Allegheny Front. Communities within the township include the census-designated places of St. Michael, Sidman, Salix, and Dunlo, as well as the southern end of Beaverdale, which is primarily in Summerhill Township.
As of the census of 2000, there were 6,495 people, 2,521 households, and 1,913 families residing in the township. The population density was 139.6 people per square mile. There were 2,642 housing units at an average density of 56.8/sq mi. The racial makeup of the township was 98.89% White, 0.05% African American, 0.18% Native American, 0.12% Asian, 0.08% Pacific Islander, 0.15% from other races, and 0.52% from two or more races. Hispanic or Latino of any race were 0.75% of the population. There were 2,521 households, out of which 31.1% had children under the age of 18 living with them, 63.4% were married couplesliving together, 9.2% had a female householder with no husband present, and 24.1% were non-families. 21.9% of all households were made up of individuals, and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 2.96. In the township the population was spread out, with 22.8% under the age of 18, 7.4% from 18 to 24, 27.3% from 25 to 44, 26.1% from 45 to 64, and 16.3% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 96.1 males. For every 100 females age 18 and over, there were 92.1 males. The median income for a household in the township was $32,442, and the median income for a family was $38,353. Males had a median income of $30,044 versus $20,606 for females. The per capita income for the township was $15,967. About 8.0% of families and 10.8% of the population were below the poverty line, including 14.3% of those under age 18 and 15.2% of those age 65 or over.
