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Data on this report is based on areas within the legal city boundary, outlined in black on the map. Any additional neighborhoods shown on the map are associated with the city by name and are included for reference only.

Monmouth, IL
Real Estate & Demographic Data






Monmouth profile


Living in Monmouth



Monmouth is a somewhat small city located in the state of Illinois. With a population of 8,650 people and two associated neighborhoods, Monmouth is the 242nd largest community in Illinois. Much of the housing stock in Monmouth was built prior to World War II, making it one of the older and more historic cities in the country.

Monmouth is also a college town, where lots of students live while attending area colleges. Because of the high percentage of people living in Monmouth enrolled in college, Monmouth has a number of services, amenities and opportunities geared towards the needs and activities of students.

One of the benefits of Monmouth is that there is very little traffic. The average commute to work is 14.79 minutes, which is substantially less than the national average. Not only does this mean that the drive to work is less aggravating, but noise and pollution levels are lower as a result.

In terms of college education, Monmouth is nearly on par with the US average for all cities of 21.84%: 19.47% of adults 25 and older in Monmouth have a bachelor's degree or advanced degree.

The per capita income in Monmouth in 2022 was $27,553, which is lower middle income relative to Illinois and the nation. This equates to an annual income of $110,212 for a family of four. However, Monmouth contains both very wealthy and poor people as well.

Monmouth is a very ethnically-diverse city. The people who call Monmouth home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Monmouth residents report their race to be White, followed by Black or African-American. Monmouth also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 18.18% of the city’s residents. Important ancestries of people in Monmouth include German, Irish, English, French, and Swedish.

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


Real Estate in Popular Monmouth Neighborhoods

Zip Codes in Monmouth, IL