Union is a city located in Kentucky. With a 2020 population of 6,058, it is the 69th largest city in Kentucky and the 4260th largest city in the United States. Union is currently growing at a rate of 1.07% annually and its population has increased by 12.62% since the most recent census, which recorded a population of 5,379 in 2010. Spanning over 3 miles, Union has a population density of 1,817 people per square mile.
The average household income in Union is $122,485 with a poverty rate of 1.94%. The median rental costs in recent years comes to $1,769 per month, and the median house value is $261,300. The median age in Union is 38.8 years, 37.8 years for males, and 40 years for females. For every 100 females there are 100.4 males.