What to know before you move: cost, market timing, who it fits.
If you're considering a move to Monmouth, IL, the most important variables are the local housing market, the cost structure (taxes, insurance, utilities), and how well the city fits your day-to-day life. This page summarizes the housing market read; pair it with the cost of living page for the full picture.
Monmouth is a city in Warren County, Illinois, with an estimated population of 8,639. The population has contracted 0.7% per year on average since 2020. The median home value in Monmouth is $107,322 as of 2026-04, up 4.7% over the last 12 months. Over the last five years, home values have averaged +4.1% annual growth, with prices at or near the 5-year peak. The composite momentum score is 63 of 100 (Rising). The market is healthy with prices supported by underlying demand.
Quiet strength: prices near or at all-time highs (-0.7% from 5-year peak). Solid market for owner-occupiers; investors should underwrite conservatively given the elevated entry point.
Reasons people move here
- Affordable AND rising: median home $107,322 with positive recent direction — rare combination most of the country can't offer.
- Quiet strength: +4.7% over the trailing year — not a melt-up, but the market is bid.
- Held the highs: currently -0.7% from the 5-year peak — this market refused to give back gains.
Things to know first
- Flat or shrinking population: -0.7% per year. Housing demand has to come from somewhere — verify the source.
- Thin housing market: small population means fewer transactions and slower resale. Liquidity risk on exit.
More about Monmouth
Sources: Zillow ZHVI (home values), Zillow ZORI (rents), US Census ACS + place population. Updated when source agencies publish revisions.