HomeIllinoisWarren CountyMonmouth
Monmouth, Illinois: commercial real estate data.
Monmouth is a Census city of 8,581 people across 4.24 square miles of land, in Warren County. Median household income is $61,138, 66.3 percent of occupied homes are owned, and the SBA record carries 1 7(a) approvals to borrowers here worth $100,000 since FY2020.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Monmouth
What Monmouth is
- Census place typecity
- Land area4.24 sq mi
- Water area0.02 sq mi
- Population per square mile of land2,023
- County holding the largest share of its areaWarren County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Monmouth
How many people live in Monmouth
- Population8,581
- Median age34.1
- Population under 182,040
- Share under 1823.8 percent
- Population 65 and over1,361
- Share 65 and over15.9 percent
- Households3,323
- Family households2,080
- Share of households that are families62.6 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Monmouth
Income and work in Monmouth
- Median household income$61,138
- Per capita income$29,501
- Civilian labor force4,287
- Employed4,134
- Unemployed153 plus or minus 93
- Unemployment rate3.6 percent plus or minus 2.2
- Adults 25 and over5,056
- Adults 25 and over with a high school diploma or higher84.0 percent
- Adults 25 and over with a bachelor degree or higher18.3 percent
- Adults 25 and over with a graduate degree6.9 percent plus or minus 2.0
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Monmouth
Housing in Monmouth
- Housing units3,750
- Occupied units3,323
- Vacant units427 plus or minus 186
- Vacancy rate11.4 percent plus or minus 4.9
- Owner occupied2,202
- Renter occupied1,121
- Ownership rate66.3 percent
- Median owner-occupied home value$86,800
- Median gross rent, monthly$733
- Annual rent as a share of median income14.4 percent
- Single family units3,010
- Share single family80.3 percent
- Units in buildings of two or more608 plus or minus 214
- Share in buildings of two or more16.2 percent plus or minus 5.6
- Mobile homes132 plus or minus 83
- Median year structure built1952
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Monmouth
How Monmouth gets to work
- Workers 16 and over who commute3,771
- Commuting under 15 minutes2,585
- Share commuting under 15 minutes68.5 percent
- Commuting 30 minutes or more531 plus or minus 138
- Share commuting 30 minutes or more14.1 percent plus or minus 3.5
- Drove alone75.0 percent
- Carpooled7.8 percent plus or minus 2.6
- Public transport1.3 percent plus or minus 1.3
- Walked6.5 percent plus or minus 2.7
- Worked from home7.5 percent plus or minus 2.2
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Monmouth
SBA loans in Monmouth (7(a))
- Approvals1
- Gross approval$100,000
- Average approval$100,000
- Median approval$100,000
- Largest approval$100,000
- Jobs supported12
- Jobs per approval12.0
- Loans with a final outcome0
- Paid in full0
- Charged off0
- Median term120 months
- Share on real estate terms of 20 years or more0.0 percent
- Share to franchises0.0 percent
- Distinct lenders1
- Distinct industries by NAICS1
Counted by borrower city: approvals to borrowers whose address is in Monmouth, in any county, FY2020 to FY2026. Only 0 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Monmouth
Flood risk in Monmouth
- NFIP communityCity of Monmouth
- NFIP community number170676
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date08/10/21
The City of Monmouth participates in the National Flood Insurance Program as community 170676 and carries no Community Rating System class, so no CRS premium discount applies to it.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Warren County, not Monmouth
Warren County context, not Monmouth figures
- Establishments in Warren County351
- Covered employment, Warren County6,368
- Average annual pay, Warren County$45,522
- Housing units permitted, Warren County9
Every figure in this section is published for Warren County as a whole and is not a measurement of Monmouth.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual.
Coverage
What this page does not hold.
Parcel detail, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Common questions
Monmouth questions, answered from the record.
How many people live in Monmouth, Illinois?
8,581, in 3,323 households. Monmouth city covers 4.24 square miles of land, which is 2,023 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Monmouth in?
Warren County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Monmouth?
$61,138. The median owner-occupied home is valued at $86,800. Median gross rent is $733 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to Monmouth businesses?
1 7(a) approvals totaling $100,000 since FY2020, across 1 lenders, median approval $100,000. These count approvals to borrowers whose address is in Monmouth, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to Monmouth borrowers get paid back?
No rate is published for Monmouth. Only 0 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published. The counts are shown instead.
Is Monmouth in the National Flood Insurance Program?
Yes. Monmouth appears in the FEMA Community Status Book as Monmouth, city of, community 170676, with no Community Rating System class, so no CRS discount applies. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Monmouth figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Warren County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Monmouth.
Is zoning published for Monmouth?
No. Nothing on this page presents parcel level zoning.
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