St. Marys is a medium-sized city located in the state of Pennsylvania. With a population of 12,399 people and three associated neighborhoods, St. Marys is the 78th largest community in Pennsylvania.

Residents will find that the city is relatively quiet. This is because it is not over-populated, and it has fewer college students, renters, and young children - all of whom can be noisy at times. So, if you're looking for a relatively peaceful place to live, St. Marys is worth considering.

One of the benefits of St. Marys is that there is very little traffic. The average commute to work is 14.86 minutes, which is substantially less than the national average. Not only does this mean that the drive to work is less aggravating, but noise and pollution levels are lower as a result.

The percentage of adults in St. Marys who are college-educated is close to the national average for all communities of 21.84%: 20.49% of the adults in St. Marys have a bachelor's degree or advanced degree.

The per capita income in St. Marys in 2022 was $36,888, which is middle income relative to Pennsylvania and the nation. This equates to an annual income of $147,552 for a family of four. However, St. Marys contains both very wealthy and poor people as well.

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

The most common language spoken in St. Marys is English. Other important languages spoken here include Spanish and German/Yiddish.