Union City is a very small borough located in the state of Pennsylvania. With a population of 2,887 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.

The borough is relatively quiet, having a combination of lower population density and few of those groups of people who have a tendency to be noisy. For example, Union City has relatively fewer families with younger children, and/or college students. Combined, this makes Union City a pretty quiet place to live overall. If you like quiet, you will probably enjoy it here.

As is often the case in a small borough, Union City doesn't have a public transportation system that people use for their commute.

The percentage of people in Union City with college degrees is quite a bit lower than the national average for cities and towns of 21.84%: just 11.29% of people over 25 have a bachelor's degree or advanced degree.

The per capita income in Union City in 2022 was $25,176, which is low income relative to Pennsylvania, and lower middle income relative to the rest of the US. This equates to an annual income of $100,704 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, Polish, Irish, and Italian.

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