Harrisburg is a somewhat small city located in the state of Illinois. With a population of 7,907 people and three associated neighborhoods, Harrisburg is the 257th largest community in Illinois.

Compared to the rest of the country, citizens of Harrisburg spend much less time in their cars: on average, their commute to work is only 18.40 minutes. This also means that noise and pollution levels in the city are less than they would otherwise be.

The education level of Harrisburg citizens, measured as those with bachelor's degrees or advanced degrees, is similar to the national average for all American cities and towns. 20.08% of adults 25 and older in Harrisburg have a college degree.

The per capita income in Harrisburg in 2022 was $26,786, which is low income relative to Illinois, and lower middle income relative to the rest of the US. This equates to an annual income of $107,144 for a family of four. However, Harrisburg contains both very wealthy and poor people as well.

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

The most common language spoken in Harrisburg is English. Other important languages spoken here include Langs. of India and Spanish.