Prospect Heights is a medium-sized city located in the state of Illinois. With a population of 15,486 people and three associated neighborhoods, Prospect Heights is the 158th largest community in Illinois.

Also of interest is that Prospect Heights has more people living here who work in computers and math than 95% of the places in the US.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 15.01% 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.

The population of Prospect Heights is very well educated relative to most cities and towns in the nation, where the average community has 21.84% of its adult population holding a 4-year degree or higher: 37.17% of adults in Prospect Heights have a bachelor's degree or even advanced degree.

The per capita income in Prospect Heights in 2022 was $45,909, which is wealthy relative to Illinois and the nation. This equates to an annual income of $183,636 for a family of four. However, Prospect Heights contains both very wealthy and poor people as well.

Prospect Heights is an extremely ethnically-diverse city. The people who call Prospect Heights home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Prospect Heights residents report their race to be White, followed by Asian. Prospect Heights also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 31.78% of the city’s residents. Important ancestries of people in Prospect Heights include Polish, German, Irish, Italian, and Swedish.

Foreign born people are also an important part of Prospect Heights's cultural character, accounting for 38.38% of the city’s population.

The most common language spoken in Prospect Heights is English. Other important languages spoken here include Spanish and Polish.