Tarentum is a very small borough located in the state of Pennsylvania. With a population of 4,233 people and four associated neighborhoods, Tarentum is the 348th largest community in Pennsylvania. Much of the housing stock in Tarentum was built prior to World War II, making it one of the older and more historic boroughs in the country.

Despite the fact that it is a small borough, Tarentum has quite a few people who take public transportation – mostly the bus - for their daily commute to work. This helps to fill a real need in the borough for affordable transportation.

The citizens of Tarentum are slightly less educated than the national average of 21.84% for the average city or town: 15.00% of adults in Tarentum have a bachelor's degree or advanced degree

The per capita income in Tarentum in 2018 was $25,311, which is low income relative to Pennsylvania, and lower middle income relative to the rest of the US. This equates to an annual income of $101,244 for a family of four.

The people who call Tarentum home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Tarentum residents report their race to be White, followed by Black or African-American. Important ancestries of people in Tarentum include German, Italian, Polish, Irish, and Slovak.

The most common language spoken in Tarentum is English. Other important languages spoken here include Italian and Spanish.