Princeton is a somewhat small city located in the state of Illinois. With a population of 7,721 people and three associated neighborhoods, Princeton is the 265th largest community in Illinois.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 7.78% of the workforce. While this number may seem small overall, as a fraction of the total workforce this is high compared to the rest of the county. 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.

Residents of the city have the good fortune of having one of the shortest daily commutes compared to the rest of the country. On average, they spend only 17.25 minutes getting to work every day.

The percentage of people in Princeton who are college-educated is somewhat higher than the average US community of 21.84%: 27.07% of adults in Princeton have at least a bachelor's degree.

The per capita income in Princeton in 2022 was $36,286, which is upper middle income relative to Illinois and the nation. This equates to an annual income of $145,144 for a family of four. However, Princeton contains both very wealthy and poor people as well.

The people who call Princeton home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Princeton residents report their race to be White, followed by Asian. Important ancestries of people in Princeton include German, English, Irish, Swedish, and Italian.

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