Quincy is a medium-sized city located in the state of Illinois. With a population of 38,786 people and 14 associated neighborhoods, Quincy is the 45th largest community in Illinois.

A relatively large number of people in Quincy telecommute to their jobs. Overall, about 8.04% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

Compared to the rest of the country, citizens of Quincy spend much less time in their cars: on average, their commute to work is only 14.78 minutes. This also means that noise and pollution levels in the city are less than they would otherwise be.

The overall education level of Quincy is somewhat higher than in the average US city of 21.84%: 27.83% of adults 25 and older in the city have at least a bachelor's degree.

The per capita income in Quincy in 2022 was $36,040, which is middle income relative to Illinois and the nation. This equates to an annual income of $144,160 for a family of four. However, Quincy contains both very wealthy and poor people as well.

Quincy is a somewhat ethnically-diverse city. The people who call Quincy home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Quincy residents report their race to be White, followed by Black or African-American. Important ancestries of people in Quincy include German, Irish, English, Italian, and Scottish.

The most common language spoken in Quincy is English. Other important languages spoken here include Spanish and French.