Rochester is a very small borough located in the state of Pennsylvania. With a population of 3,405 people and two associated neighborhoods, Rochester is the 436th largest community in Pennsylvania. Much of the housing stock in Rochester was built prior to World War II, making it one of the older and more historic boroughs in the country.

Also of interest is that Rochester has more people living here who work in computers and math than 95% of the places in the US.

The citizens of Rochester are slightly less educated than the national average of 21.84% for the average city or town: 14.69% of adults in Rochester have a bachelor's degree or advanced degree

The per capita income in Rochester in 2018 was $22,297, which is low income relative to Pennsylvania and the nation. This equates to an annual income of $89,188 for a family of four. However, Rochester contains both very wealthy and poor people as well.

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

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