According to the United States Census Bureau, the Pinch CDP has a total area of 3.5 square miles (9.2 km²), of which, 3.5 square miles (9.1 km²) of it is land and 0.04 square miles (0.1 km²) of it (1.13%) is water.
There were 1,138 households out of which 32.5% had children under the age of 18 living with them, 64.7% were married couples living together, 9.2% had a female householder with no husband present, and 23.6% were non-families. 20.9% of all households were made up of individuals and 7.0% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 2.85.
The community's age distribution is 22.1% under the age of 18, 7.3% from 18 to 24, 29.3% from 25 to 44, 28.6% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 93.6 males. For every 100 females age 18 and over, there were 92.5 males.
The median income for a Pinch household is $46,516, and the median income for a family was $55,848. Males had a median income of $40,456 versus $35,203 for females. The per capita income in Pinch is $21,398. About 6.0% of families and 5.9% of the population were below the poverty line, including 5.5% of those under age 18 and 19.9% of those age 65 or over.