Quincy is a city located in Washington. With a 2020 population of 8,056, it is the 102nd largest city in Washington and the 3607th largest city in the United States. Quincy is currently growing at a rate of 1.37% annually and its population has increased by 19.35% since the most recent census, which recorded a population of 6,750 in 2010. Spanning over 6 miles, Quincy has a population density of 1,331 people per square mile.
The average household income in Quincy is $69,674 with a poverty rate of 17.66%. The median rental costs in recent years comes to $690 per month, and the median house value is $144,700. The median age in Quincy is 25.8 years, 23.5 years for males, and 28.7 years for females. For every 100 females there are 101.9 males.