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Single Family ResidentialResidential
$71,268$69 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 88How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

1803 40TH ST

MONMOUTH, IL 61462
0
Baths
1,032 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.47 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.

Valuation

$71K
$63K low$80K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,688 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$28,920 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,090
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$26,830
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$26,970
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$86,760

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.12 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyWARREN
Lot (acres)The size of the land the home sits on, from county records.0.47
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
United Elementary School - WestB-
Elementary · Grades PK–3 · 4.0 mi
H
United Jr./Sr. High SchoolB-
High · Grades 7–12 · 6.3 mi

District: United Community School District 304

Neighborhood · ZIP 61462These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.30

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.10,689
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.70 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,274
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,942
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

1803 40th St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 71% of homes in Monmouth 61462
  • Smaller than 74% of homes in Warren County
  • Has a bigger lot than 79% of homes in Monmouth 61462

What homes are worth in Monmouth 61462

Each bar is how many homes fall in that price range. The marker is this home.

This home
$24K$326K

This home is worth more than 29% of homes in Monmouth 61462.

How it measures up in Monmouth 61462

The dot is this home. The mark in the middle is the typical home in Monmouth 61462.

Estimated value$71,268
CheaperTypical $101,370Pricier

Pricier than 29% of homes nearby

Price per ft²$69
CheaperTypical $80Pricier

Pricier than 40% of homes nearby

Living area1,032 ft²
SmallerTypical 1,282 ft²Bigger

Bigger than 29% of homes nearby

Lot size0.47 ac
SmallerTypical 0.22 acBigger

Bigger than 79% of homes nearby

Year built1920
OlderTypical 1930Newer

Newer than 42% of homes nearby

How 1803 40th St ranks against every home in each area.
MeasureThis homeMonmouth 61462Warren County
Estimated valuepricier than$71,26829% of homes29% of homes
Price per ft²pricier than$6940% of homes41% of homes
Living areabigger than1,032 ft²29% of homes26% of homes
Lot sizebigger than0.47 ac79% of homes67% of homes
Year builtnewer than192042% of homes41% of homes

About 1803 40th St

How much is 1803 40th St, Monmouth, IL worth?

The TopHap Estimate for 1803 40th St, Monmouth, IL is $71,268 as of Oct 21, 2026. The likely range is $62,605 to $79,931. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1803 40th St, Monmouth, IL last sell?

1803 40th St, Monmouth, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 1803 40th St, Monmouth, IL?

1803 40th St, Monmouth, IL has 1,032 square feet of living space and a 0.47-acre lot.

When was 1803 40th St, Monmouth, IL built?

1803 40th St, Monmouth, IL was built in 1920, making it 106 years old.

What schools serve 1803 40th St, Monmouth, IL?

1803 40th St, Monmouth, IL is assigned to United Elementary School - West (elementary), rated B-; United Jr./Sr. High School (high), rated B-. All sit in United Community School District 304. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1803 40th St, Monmouth, IL compare to other homes in Monmouth 61462?

Among the 3,868 homes in Monmouth 61462, it is worth more than 29% of them ($71,268 against a typical $101,370), its price per square foot is higher than 40% of them ($69 against a typical $80), it is bigger than 29% of them (1,032 ft² against a typical 1,282 ft²), its lot is bigger than 79% of them (0.47 ac against a typical 0.22 ac) and it is newer than 42% of them (1920 against a typical 1930). Measured against all of Warren County, it is worth more than 29% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 1803 40th St, Monmouth, IL?

The 2025 property tax bill for 1803 40th St, Monmouth, IL was $1,688. The county assessed it at $28,920.

More homes on 40th St

Closest homes

More homes in Monmouth 61462

Assigned schools

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