Brentwood is a city located in Pennsylvania. With a 2020 population of 9,183, it is the 75th largest city in Pennsylvania and the 3269th largest city in the United States. Brentwood is currently declining at a rate of -0.79% annually and its population has decreased by -4.77% since the most recent census, which recorded a population of 9,643 in 2010. Brentwood reached it's highest population of 13,732 in 1970. Spanning over 1 miles, Brentwood has a population density of 6,344 people per square mile.
The average household income in Brentwood is $71,863 with a poverty rate of 8.59%. The median rental costs in recent years comes to $754 per month, and the median house value is $98,800. The median age in Brentwood is 36.4 years, 36.6 years for males, and 36.1 years for females. For every 100 females there are 94.4 males.