Union City is a very small borough located in the state of Pennsylvania. With a population of 2,866 people and two associated neighborhoods, Union City is the 505th largest community in Pennsylvania. Union City has an unusually large stock of pre-World War II architecture, making it one of the older and more historic boroughs.

Union City 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.

In Union City, just 12.08% of people have at least a bachelor's degree, which is quite a bit lower than the national average for cities and towns of 21.84%.

The per capita income in Union City in 2022 was $24,011, which is low income relative to Pennsylvania and the nation. This equates to an annual income of $96,044 for a family of four. However, Union City contains both very wealthy and poor people as well.

The people who call Union City home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Union City residents report their race to be White. Important ancestries of people in Union City include English, German, Irish, Italian, and Polish.

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