Monessen is a somewhat small city located in the state of Pennsylvania. With a population of 6,764 people and three associated neighborhoods, Monessen is the 191st largest community in Pennsylvania.

A relatively large number of people in Monessen telecommute to their jobs. Overall, about 7.93% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

The overall education level of Monessen is somewhat higher than in the average US city of 21.84%: 27.40% of adults 25 and older in the city have at least a bachelor's degree.

The per capita income in Monessen in 2022 was $30,202, which is lower middle income relative to Pennsylvania, and middle income relative to the rest of the US. This equates to an annual income of $120,808 for a family of four. However, Monessen contains both very wealthy and poor people as well.

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

The most common language spoken in Monessen is English. Other important languages spoken here include Polish and French.