The median home value in Monmouth, IL is $108,501 as of 2026-06-30, down 0.24% from a year earlier.
Median Home Value
$108,501
Year-over-Year
-0.24%
Population
8,460
Monmouth ranks #271 of 279 Illinois cities tracked here by median home value, and sits 65.9% below the state's city median of $318,423. It sits in Warren County, where the county-wide median is $114,979.
Monmouth police recorded a violent crime rate of 366 per 100,000 residents in 2024 — around the middle of the range for reporting cities. Property crime runs at 1,371 per 100,000.
Reported by the city's own police department to the FBI's Uniform Crime Reporting Program (what this covers).
The median home value in Monmouth is $108,501. That's down 0.24% from a year earlier. That is about 65.9% below the typical county in Illinois.
Homes in Monmouth are cheaper than Warren County as a whole, where the median is $114,979 — a difference of about 5.6%.
Monmouth police reported 366 violent crimes per 100,000 residents, covering a population of about 8,460. Crime rates are one input among many — they vary block to block within a city, and this figure is a citywide average.