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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. Monmouth has a large stock of pre-World War II architecture, 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.

Compared to the rest of the country, citizens of Monmouth spend much less time in their cars: on average, their commute to work is only 14.79 minutes. This also means that noise and pollution levels in the city are less than they would otherwise be.

The percentage of adults in Monmouth who are college-educated is close to the national average for all communities of 21.84%: 19.47% of the adults in Monmouth have a bachelor's degree or advanced degree.

The per capita income in Monmouth in 2018 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