Monmouth is a city in Warren County, Illinois, home to about 8,581 people across 4.2 square miles. Its ZIP code is 61462.
Homes sold for a median of $92 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Monmouth. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Monmouth’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Monmouth well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | St. Louis Lambert International Airport (STL)150 miles away |
|---|---|
| Closer regional airport | Southeast Iowa Regional Airport (BRL)27 miles away |
| Nearest city of 250,000+ | St. Louis, MO159 miles away |
| Nearest city of 1 million+ | Chicago, IL166 miles away |
Straight-line distances from the center of Monmouth; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Monmouth had 8,902 residents in the 2020 census, down 10% since 2000.
It’s the 252nd largest of 1,450 towns in Illinois by population.
Warren County grew from 23,163 residents in 1900 to 16,835 in 2020.
Warren County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 15°F. About 39.6 inches of rain and melted snow fall in a typical year, with about 26 inches of snow.
Source: NOAA 1991–2020 climate normals, Monmouth, IL weather station (2 miles away).
5,447 jobs at 351 businesses in Warren County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
51 doctors and other health care providers list an office in Monmouth.
Nearest hospitals
Providers with an office here
| Primary care doctors | 9 |
|---|---|
| Specialist doctors | 4 |
| Dentists | 5 |
| Nurse practitioners and physician assistants | 14 |
| Mental health providers | 6 |
| Physical and occupational therapists | 4 |
| Optometrists | 2 |
| Chiropractors | 7 |
| Pharmacies | 4 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (12 nearby)
Grocery stores (3 nearby)
Libraries (1 nearby)
Museums (2 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1831.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Monmouth-Roseville CUSD 238, United CUSD 304. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Lincoln Early Childhood SchoolMonmouth | Pre-K–1 | 324 | Public | 0.8 mi |
| United Elem Sch - WestMonmouth | Pre-K–3 | 179 | Public | 6.0 mi |
| Harding Primary SchoolMonmouth | 2–3 | 240 | Public | 0.7 mi |
| Central Intermediate SchoolMonmouth | 4–6 | 318 | Public | 0.1 mi |
| United Intermediate SchoolMonmouth | 4–6 | 198 | Public | 5.8 mi |
| United Jr./Sr. High SchoolMonmouth | 7–12 | 445 | Public | 2.8 mi |
| Monmouth-Roseville High SchMonmouth | 9–12 | 483 | Public | 0.3 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Immaculate Conception SchoolMonmouth | Pre-K–8 | 151 | Roman Catholic | 0.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
Buying or selling around Monmouth? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.