Oil City is a city located in Pennsylvania. With a 2020 population of 9,479, it is the 72nd largest city in Pennsylvania and the 3203rd largest city in the United States. Oil City is currently declining at a rate of -1.40% annually and its population has decreased by -10.21% since the most recent census, which recorded a population of 10,557 in 2010. Oil City reached it's highest population of 22,075 in 1930. Spanning over 5 miles, Oil City has a population density of 2,110 people per square mile.
The average household income in Oil City is $52,794 with a poverty rate of 21.76%. The median rental costs in recent years comes to $597 per month, and the median house value is $49,100. The median age in Oil City is 38.6 years, 37.6 years for males, and 40.3 years for females. For every 100 females there are 94.2 males.