Cairo is a very small city located in the state of Illinois. With a population of 1,611 people and two associated neighborhoods, Cairo is the 604th largest community in Illinois.

It is a fairly quiet city because there are relatively few of those groups of people who have a tendency to be noisy. (Children, for example, often can't help themselves from being noisy, and being parents ourselves, we know!) Cairo has relatively few families with children living at home, and is quieter because of it. Renters and college students, for their own reasons, can also be noisy. Cairo has few renters and college students. But the biggest reason it is quieter in Cairo than in most places in America, is that there are just simply fewer people living here. If you think trees make good neighbors, Cairo may be for you.

Cairo, even though it is a small city, has many people who use public transportation every day to get to and from work. This is a great benefit for people in the, city who have a need for low-cost transportation.

The percentage of adults in Cairo with college degrees is slightly lower than the national average of 21.84% for all communities. 13.64% of adults in Cairo have a bachelor's degree or advanced degree.

The per capita income in Cairo in 2022 was $19,511, which is low income relative to Illinois and the nation. This equates to an annual income of $78,044 for a family of four.

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 Irish, German, English, Scottish, and Eastern European.

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