Quincy is a city located in Washington. With a 2020 population of 8,537, it is the 98th largest city in Washington and the 3448th largest city in the United States. Quincy is currently growing at a rate of 3.04% annually and its population has increased by 26.47% since the most recent census, which recorded a population of 6,750 in 2010. Quincy reached it's highest population of 8,537 in 2021. Spanning over 6 miles, Quincy has a population density of 1,411 people per square mile.
The average household income in Quincy is $72,048 with a poverty rate of 22.11%. The median rental costs in recent years comes to $775 per month, and the median house value is $153,500. The median age in Quincy is 24.3 years, 22.8 years for males, and 26.1 years for females. For every 100 females there are 103.0 males.