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Single Family ResidentialResidential
$71,377
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 66How 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

423 N STATE ST

MENDON, IL 62351
0
Baths
0.49 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$71K
$47K low$96K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$328 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$23,040 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,410
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$17,630
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$21,330
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$69,120

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyADAMS
Lot (acres)The size of the land the home sits on, from county records.0.49
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.

H
Unity High SchoolB-
High · Grades 9–12 · 0.4 mi
E
Unity Elementary SchoolB
Elementary · Grades KG–3 · 0.4 mi
M
Unity Middle School
Middle · Grades 4–8 · 2.9 mi

District: Community Unit School District 4

Neighborhood · ZIP 62351These 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.99
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.31

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.91%
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.9.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.2,016
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.27 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,979
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,641
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.38 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

423 N State 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 89% of homes in Adams County
  • Has a bigger lot than 70% of homes in Adams County

What homes are worth in Mendon 62351

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

This home
$34K$346K

This home is worth more than 20% of homes in Mendon 62351.

How it measures up in Mendon 62351

The dot is this home. The mark in the middle is the typical home in Mendon 62351.

Estimated value$71,377
CheaperTypical $139,124Pricier

Pricier than 20% of homes nearby

Lot size0.49 ac
SmallerTypical 0.5 acBigger

Bigger than 47% of homes nearby

How 423 N State St ranks against every home in each area.
MeasureThis homeMendon 62351Adams County
Estimated valuepricier than$71,37720% of homes11% of homes
Lot sizebigger than0.49 ac47% of homes70% of homes

About 423 N State St

How much is 423 N State St, Mendon, IL worth?

The TopHap Estimate for 423 N State St, Mendon, IL is $71,377 as of Sep 24, 2026. The likely range is $47,162 to $95,592. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 423 N State St, Mendon, IL last sell?

423 N State St, Mendon, IL last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 423 N State St, Mendon, IL?

423 N State St, Mendon, IL is assigned to Unity High School (high), rated B-; Unity Elementary School (elementary), rated B; Unity Middle School (middle). All sit in Community Unit School District 4. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 423 N State St, Mendon, IL compare to other homes in Mendon 62351?

Among the 540 homes in Mendon 62351, it is worth more than 20% of them ($71,377 against a typical $139,124) and its lot is bigger than 47% of them (0.49 ac against a typical 0.5 ac). Measured against all of Adams County, it is worth more than 11% 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 423 N State St, Mendon, IL?

The 2024 property tax bill for 423 N State St, Mendon, IL was $328. The county assessed it at $23,040.

More homes on N State St

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Assigned schools

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