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. Rochester has an unusually large stock of pre-World War II architecture, making it one of the older and more historic boroughs.

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.

In terms of college education, the citizens of Rochester rank slightly lower than the national average. 14.69% of adults 25 and older in Rochester have a bachelor's degree or advanced degree, while 21.84% of adults have a 4-year degree or higher in the average American community.

The per capita income in Rochester in 2022 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.