Skip to content
Skip to content
TopHapOpen in map
Single Family ResidentialResidential
$52,936
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 76How 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 $30,000 on Aug 31, 2006

451 W WASHINGTON ST

MENDON, IL 62351
0
Baths

Valuation

$53K
$40K low$66K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$30,000 · Aug 31, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$864 (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.$19,510 (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.$14,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$18,070
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$58,530

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyAdams

Transaction History(1)

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
Unity High SchoolB-
High · Grades 9–12 · 0.1 mi
E
Unity Elementary SchoolB
Elementary · Grades KG–3 · 0.3 mi
M
Unity Middle School
Middle · Grades 4–8 · 2.6 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%

Owner Tools

Do you own this home?
Claim this home

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

451 W Washington 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 94% 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 15% 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$52,936
CheaperTypical $139,124Pricier

Pricier than 15% of homes nearby

How 451 W Washington St ranks against every home in each area.
MeasureThis homeMendon 62351Adams County
Estimated valuepricier than$52,93615% of homes6% of homes

About 451 W Washington St

How much is 451 W Washington St, Mendon, IL worth?

The TopHap Estimate for 451 W Washington St, Mendon, IL is $52,936 as of Sep 24, 2026. The likely range is $40,100 to $65,772. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 451 W Washington St, Mendon, IL last sell?

451 W Washington St, Mendon, IL last sold on Aug 31, 2006 for $30,000, according to the county's recorded deed.

What schools serve 451 W Washington St, Mendon, IL?

451 W Washington 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.

What are the property taxes on 451 W Washington St, Mendon, IL?

The 2024 property tax bill for 451 W Washington St, Mendon, IL was $864. The county assessed it at $19,510.

More homes on W Washington St

Closest homes

More homes in Mendon 62351

Assigned schools

Explore the area

See this home in context

Open 451 W Washington St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map