Union City is a city located in Erie County Pennsylvania. With a 2020 population of 3,056, it is the 309th largest city in Pennsylvania and the 6206th largest city in the United States . Union City is currently declining at a rate of -1.00% annually and its population has decreased by -7.95% since the most recent census, which recorded a population of 3,320 in 2010. Union City reached it's highest population of in . Spanning over 2 miles, Union City has a population density of 1,670 people per square mile.
The average household income in Union City is $55,729 with a poverty rate of 26.32%. The median rental costs in recent years comes to $585 per month, and the median house value is $84,200. The median age in Union City is 40.8 years, 37.6 years for males, and 42.7 years for females.