In 2021, Monmouth, IL had a population of 8.81k people with a median age of 35.6 and a median household income of $54,400. Between 2020 and 2021 the population of Monmouth, IL declined from 8,837 to 8,810, a −0.306% decrease and its median household income grew from $50,740 to $54,400, a 7.21% increase.
The 5 largest ethnic groups in Monmouth, IL are White (Non-Hispanic) (70.4%), White (Hispanic) (8.12%), Other (Hispanic) (7.06%), Black or African American (Non-Hispanic) (6.57%), and Asian (Non-Hispanic) (2.51%).
None of the households in Monmouth, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
94.9% of the residents in Monmouth, IL are U.S. citizens.
The largest universities in Monmouth, IL are Monmouth College (242 degrees awarded in 2021).
In 2021, the median property value in Monmouth, IL was $77,800, and the homeownership rate was 71%.
Most people in Monmouth, IL drove alone to work, and the average commute time was 15 minutes. The average car ownership in Monmouth, IL was 2 cars per household.