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CondominiumResidential
$265,814
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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $145,000 on May 15, 2025

509 S PIATT ST

MONTICELLO, IL 61856
0
Baths

Valuation

$266K
$237K low$295K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$145,000 · May 15, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,007 (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.$48,698 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$48,698
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$45,091
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$146,094

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyPIATT
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
Monticello High SchoolA+
High · Grades 9–12 · 0.3 mi
E
Washington SchoolA-
Elementary · Grades PK–3 · 0.4 mi
M
Monticello Middle SchoolB+
Middle · Grades 6–8 · 0.6 mi

District: Monticello Community Unit School District 25

Neighborhood · ZIP 61856These 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.90
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.45

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
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.1.2%
PopulationHow many people live in this area.8,077
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.77 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,450
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,776
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

509 S Piatt 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.

What homes are worth in Monticello 61856

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

This home
$137K$751K

This home is worth more than 43% of homes in Monticello 61856.

How it measures up in Monticello 61856

The dot is this home. The mark in the middle is the typical home in Monticello 61856.

Estimated value$265,814
CheaperTypical $290,062Pricier

Pricier than 43% of homes nearby

How 509 S Piatt St ranks against every home in each area.
MeasureThis homeMonticello 61856Piatt County
Estimated valuepricier than$265,81443% of homes60% of homes

About 509 S Piatt St

How much is 509 S Piatt St, Monticello, IL worth?

The TopHap Estimate for 509 S Piatt St, Monticello, IL is $265,814 as of Aug 30, 2026. The likely range is $236,510 to $295,118. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 S Piatt St, Monticello, IL last sell?

509 S Piatt St, Monticello, IL last sold on May 15, 2025 for $145,000, according to the county's recorded deed.

What schools serve 509 S Piatt St, Monticello, IL?

509 S Piatt St, Monticello, IL is assigned to Monticello High School (high), rated A+; Washington School (elementary), rated A-; Monticello Middle School (middle), rated B+. All sit in Monticello Community Unit School District 25. Attendance boundaries change — confirm with the district before relying on an assignment.

What are the property taxes on 509 S Piatt St, Monticello, IL?

The 2025 property tax bill for 509 S Piatt St, Monticello, IL was $3,007. The county assessed it at $48,698.

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