Monaca is a city located in Pennsylvania. With a 2020 population of 5,335, it is the 177th largest city in Pennsylvania and the 4571st largest city in the United States. Monaca is currently declining at a rate of -1.17% annually and its population has decreased by -7.01% since the most recent census, which recorded a population of 5,737 in 2010. Monaca reached it's highest population of 8,394 in 1960. Spanning over 2 miles, Monaca has a population density of 2,632 people per square mile.
The average household income in Monaca is $52,591 with a poverty rate of 9.48%. The median rental costs in recent years comes to $595 per month, and the median house value is $114,300. The median age in Monaca is 45.2 years, 40.7 years for males, and 46.6 years for females. For every 100 females there are 92.0 males.