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Single Family ResidentialResidential
$40,838$24 / 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 55How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $15,000 on Oct 7, 2021

820 S MAIN ST

MONMOUTH, IL 61462
0
Baths
1,682 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.

Valuation

$41K
$22K low$59K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$15,000 · Oct 7, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$643 (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.$12,620 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,180
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$10,440
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$11,630
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$37,860

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.19 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

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.0.24
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

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

H
Monmouth-Roseville High SchoolD+
High · Grades 9–12 · 0.5 mi
E
Lincoln Early Childhood School
Elementary · Grades PK–1 · 1.0 mi
M
Monmouth-Roseville Jr High SchoolD+
Middle · Grades 7–8 · 12.2 mi

District: Monmouth-Roseville Community Unit School District 238

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

820 S Main 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 91% of homes in Monmouth 61462
  • Costs less per square foot than 97% of homes in Monmouth 61462
  • Bigger than 74% of homes in Monmouth 61462
  • Older than 83% 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$331K

This home is worth more than 9% 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$40,838
CheaperTypical $99,694Pricier

Pricier than 9% of homes nearby

Price per ft²$24
CheaperTypical $78Pricier

Pricier than 3% of homes nearby

Living area1,682 ft²
SmallerTypical 1,284 ft²Bigger

Bigger than 74% of homes nearby

Lot size0.24 ac
SmallerTypical 0.22 acBigger

Bigger than 58% of homes nearby

Year built1900
OlderTypical 1930Newer

Newer than 17% of homes nearby

How 820 S Main St ranks against every home in each area.
MeasureThis homeMonmouth 61462Warren County
Estimated valuepricier than$40,8389% of homes9% of homes
Price per ft²pricier than$243% of homes3% of homes
Living areabigger than1,682 ft²74% of homes74% of homes
Lot sizebigger than0.24 ac58% of homes42% of homes
Year builtnewer than190017% of homes18% of homes

About 820 S Main St

How much is 820 S Main St, Monmouth, IL worth?

The TopHap Estimate for 820 S Main St, Monmouth, IL is $40,838 as of Sep 24, 2026. The likely range is $22,268 to $59,408. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 820 S Main St, Monmouth, IL last sell?

820 S Main St, Monmouth, IL last sold on Oct 7, 2021 for $15,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 820 S Main St, Monmouth, IL?

820 S Main St, Monmouth, IL has 1,682 square feet of living space and a 0.24-acre lot.

When was 820 S Main St, Monmouth, IL built?

820 S Main St, Monmouth, IL was built in 1900, making it 126 years old.

What schools serve 820 S Main St, Monmouth, IL?

820 S Main St, Monmouth, IL is assigned to Monmouth-Roseville High School (high), rated D+; Lincoln Early Childhood School (elementary); Monmouth-Roseville Jr High School (middle), rated D+. All sit in Monmouth-Roseville Community Unit School District 238. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 820 S Main St, Monmouth, IL compare to other homes in Monmouth 61462?

Among the 3,868 homes in Monmouth 61462, it is worth more than 9% of them ($40,838 against a typical $99,694), its price per square foot is higher than 3% of them ($24 against a typical $78), it is bigger than 74% of them (1,682 ft² against a typical 1,284 ft²), its lot is bigger than 58% of them (0.24 ac against a typical 0.22 ac) and it is newer than 17% of them (1900 against a typical 1930). Measured against all of Warren County, it is worth more than 9% 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 820 S Main St, Monmouth, IL?

The 2025 property tax bill for 820 S Main St, Monmouth, IL was $643. The county assessed it at $12,620.

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Assigned schools

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