Cairo is a very small city located in the state of Illinois. With a population of 1,523 people and two associated neighborhoods, Cairo is the 604th largest community in Illinois. Cairo has an unusually large stock of pre-World War II architecture, making it one of the older and more historic cities.

Residents will find that the city is relatively quiet. This is because it is not over-populated, and it has fewer college students, renters, and young children - all of whom can be noisy at times. So, if you're looking for a relatively peaceful place to live, Cairo is worth considering.

Cairo is a small city, and as such doesn't have a public transit system that people use to get to and from their jobs every day.

The percentage of adults in Cairo with college degrees is slightly lower than the national average of 21.84% for all communities. 13.23% of adults in Cairo have a bachelor's degree or advanced degree.

The per capita income in Cairo in 2022 was $25,276, which is low income relative to Illinois and the nation. This equates to an annual income of $101,104 for a family of four. However, Cairo contains both very wealthy and poor people as well.

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

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