Checked
Monmouth, IL
City in Warren County, Illinois. ZIP codes: 61462.
Population
8,581
Land area
4.2sq mi
People per sq mi
2,023
ZIP codes
1
Monmouth and its ZIP codes
Monmouth at a glance
- Monmouth is about 8.8 times as dense as Illinois as a whole.
- By population, it ranks 253rd among 1,445 cities and towns in Illinois.
- The median household income is $61,138, 27% below the Illinois median of $83,390.
- A typical owner-occupied home is valued at $86,800 (67% below Illinois) and median rent is $733 a month.
Local data for Monmouth, IL
Counts from official public data
Housing and community stats
Monmouth, IL, American Community Survey 2020-2024
Median household income
$61,138
Poverty rate
17.7%
Median home value
$86,800
Median rent
$733/mo
Homeownership
66.3%
Bachelor's or higher
18.3%
Median age
34.1
Average commute
15.5 min
Largest reported origins and ancestries: German Americans (1,410), Mexican Americans (1,265), Irish Americans (1,091).
Economy and federal money
Jobs, pay, income and spending are for Warren County. PPP loans are for Monmouth.
Unemployment rate
3.6%
Aug 2026, -1.1 pts in a year
Average annual pay
$46,233
6,346 jobs, 2025
Income per person
$55,441
BEA, 2024
Federal spending
$135M
FY 2026, $8,038 per person
PPP loans
$16.85M
448 loans, 2,242 jobs reported
How people get to work
Monmouth, IL, workers 16 and older. American Community Survey 5-year estimates
- Drove alone75.0%
- Carpooled7.8%
- Public transit1.3%
- Walked6.5%
- Bicycle0.2%
- Taxi, ride-hailing, motorcycle or other1.7%
- Worked from home7.5%
Average one-way commute: 15.5 minutes for people who do not work from home.
Environment and hazard risk
Monmouth, IL, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: drought
Storm events since 1996
443
Countywide, mostly thunderstorm wind
Flood insurance policies
26
0.4% of homes, county
July high / Jan low
84° / 15°F
39.4 inches of rain a year
Hazards, floods and storm historyCheck a flood zone8 historic places
Health statistics
Share of adults in Monmouth, IL, CDC PLACES estimates
Obesity
37.2%
U.S. 33.3% +3.9 pts
Diabetes
11.9%
U.S. 12.1% about the same
Smoking
14.5%
U.S. 12.8% +1.7 pts
Uninsured (18-64)
11.3%
U.S. 11.1% about the same
ZIP codes in Monmouth
1 in or overlapping Monmouth. Population shown
Cities near Monmouth
| Name | Distance | Land area (sq mi) |
|---|---|---|
| KirkwoodVillage | 6.2 mi | 0.9 |
| CameronCensus-designated place | 7 mi | 0.6 |
| Little YorkVillage | 8.4 mi | 0.2 |
| AlexisVillage | 11 mi | 0.5 |
| BiggsvilleVillage | 12 mi | 0.3 |
| RosevilleVillage | 13 mi | 0.7 |
| MediaVillage | 14 mi | 1.7 |
| GalesburgCity | 14 mi | 17.8 |
| AbingdonCity | 15 mi | 1.4 |
| North HendersonVillage | 15 mi | 0.2 |
| SeatonVillage | 15 mi | 1.6 |
| OquawkaVillage | 16 mi | 1.5 |
| GladstoneVillage | 17 mi | 0.4 |
| HendersonVillage | 17 mi | 0.3 |
| East GalesburgVillage | 18 mi | 1.4 |
| RaritanVillage | 18 mi | 0.1 |
Frequently asked questions
- What county is Monmouth, IL in?
- Monmouth is in Warren County, Illinois.
- What ZIP codes are in Monmouth, IL?
- ZIP codes in or overlapping Monmouth include 61462.
- What is the population of Monmouth, IL?
- About 8,581 people live in Monmouth, based on American Community Survey 5-year estimates.
- What cities are near Monmouth?
- Nearby places include Kirkwood (6.2 mi), Cameron (7 mi), Little York (8.4 mi), Alexis (11 mi), Biggsville (12 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023