Mars is a very small borough located in the state of Pennsylvania. With a population of 1,430 people and three associated neighborhoods, Mars is the 738th largest community in Pennsylvania. Mars has a large stock of pre-World War II architecture, making it one of the older and more historic boroughs in the country.

Mars home prices are not only among the most expensive in Pennsylvania, but Mars real estate also consistently ranks among the most expensive in America.

Telecommuters are a relatively large percentage of the workforce: 7.49% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. 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.

Being a small borough, Mars does not have a public transit system used by locals to get to and from work.

The citizens of Mars are slightly better educated than the national average of 21.84% for all cities and towns, with 24.66% of adults in Mars having a bachelor's degree or advanced degree.

The per capita income in Mars in 2022 was $35,688, which is middle income relative to Pennsylvania, and upper middle income relative to the rest of the US. This equates to an annual income of $142,752 for a family of four. However, Mars contains both very wealthy and poor people as well.

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

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