Jacksonville is a medium-sized city located in the state of Illinois. With a population of 17,279 people and six associated neighborhoods, Jacksonville is the 146th largest community in Illinois.

Telecommuters are a relatively large percentage of the workforce: 9.14% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. 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 Jacksonville spend much less time in their cars: on average, their commute to work is only 17.61 minutes. This also means that noise and pollution levels in the city are less than they would otherwise be.

The citizens of Jacksonville are slightly better educated than the national average of 21.84% for all cities and towns, with 22.40% of adults in Jacksonville having a bachelor's degree or advanced degree.

The per capita income in Jacksonville in 2022 was $31,927, which is middle income relative to Illinois and the nation. This equates to an annual income of $127,708 for a family of four. However, Jacksonville contains both very wealthy and poor people as well.

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

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