Sunbury is a city located in Pennsylvania. With a 2020 population of 9,273, it is the 74th largest city in Pennsylvania and the 3255th largest city in the United States. Sunbury is currently declining at a rate of -0.73% annually and its population has decreased by -6.38% since the most recent census, which recorded a population of 9,905 in 2010. Sunbury reached it's highest population of 15,721 in 1920. Spanning over 2 miles, Sunbury has a population density of 4,584 people per square mile.
The average household income in Sunbury is $46,880 with a poverty rate of 21.92%. The median rental costs in recent years comes to $633 per month, and the median house value is $78,500. The median age in Sunbury is 36.4 years, 34.6 years for males, and 38.9 years for females. For every 100 females there are 103.1 males.