Leechburg is a very small borough located in the state of Pennsylvania. With a population of 2,091 people and two associated neighborhoods, Leechburg is the 622nd largest community in Pennsylvania. Leechburg has a large stock of pre-World War II architecture, making it one of the older and more historic boroughs in the country.

Leechburg is a small borough, and as such doesn't have a public transit system that people use to get to and from their jobs every day.

The citizens of Leechburg are slightly less educated than the national average of 21.84% for the average city or town: 15.61% of adults in Leechburg have a bachelor's degree or advanced degree

The per capita income in Leechburg in 2022 was $28,771, which is lower middle income relative to Pennsylvania and the nation. This equates to an annual income of $115,084 for a family of four. However, Leechburg contains both very wealthy and poor people as well.

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

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