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Single Family ResidenceResidential
$998,626$394 / 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 91How 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 $800,000 on Oct 25, 2023

640 MILLS ST

HINSDALE, IL 60521
3
Beds
3 / 1
Baths
2,537 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1998
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$999K
$904K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$800,000 · Oct 25, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,048 (2023)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$69,001 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$9,563
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$59,438
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$68,999
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$690,010

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.36
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
69
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
65
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
45
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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 Residence
StyleThe architectural style of the home, such as ranch or colonial.Split Level
CountyCook
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached

Transaction History(7)

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.

E
The Lane Elementary SchoolA
Elementary · Grades KG–5 · 0.5 mi
M
Hinsdale Middle SchoolB+
Middle · Grades 6–8 · 1.2 mi
H
Hinsdale Central High SchoolA
High · Grades 9–12 · 2.1 mi

District: Hinsdale Township High School District 86

Neighborhood · ZIP 60521These 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.43
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.121
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.48

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.17,211
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,597 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$235,781
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$359,560
Average tempThe average temperature here across a full year.49°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.54%

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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

640 Mills 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 more than 94% of homes in Cook County
  • Costs more per square foot than 89% of homes in Cook County
  • Bigger than 83% of homes in Cook County
  • Has a smaller lot than 81% of homes in Hinsdale 60521
  • Newer than 88% of homes in Cook County

What homes are worth in Hinsdale 60521

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

This home
$307K$4.8M

This home is worth more than 37% of homes in Hinsdale 60521.

How it measures up in Hinsdale 60521

The dot is this home. The mark in the middle is the typical home in Hinsdale 60521.

Estimated value$998,626
CheaperTypical $1,234,795Pricier

Pricier than 37% of homes nearby

Price per ft²$394
CheaperTypical $430Pricier

Pricier than 37% of homes nearby

Living area2,537 ft²
SmallerTypical 2,870 ft²Bigger

Bigger than 39% of homes nearby

Lot size0.17 ac
SmallerTypical 0.26 acBigger

Bigger than 19% of homes nearby

Year built1998
OlderTypical 1978Newer

Newer than 71% of homes nearby

How 640 Mills St ranks against every home in each area.
MeasureThis homeHinsdale 60521Cook County
Estimated valuepricier than$998,62637% of homes94% of homes
Price per ft²pricier than$39437% of homes89% of homes
Living areabigger than2,537 ft²39% of homes83% of homes
Lot sizebigger than0.17 ac19% of homes56% of homes
Year builtnewer than199871% of homes88% of homes

About 640 Mills St

How much is 640 Mills St, Hinsdale, IL worth?

The TopHap Estimate for 640 Mills St, Hinsdale, IL is $998,626 as of Sep 24, 2026. The likely range is $903,836 to $1,093,416. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 Mills St, Hinsdale, IL last sell?

640 Mills St, Hinsdale, IL last sold on Oct 25, 2023 for $800,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 640 Mills St, Hinsdale, IL?

640 Mills St, Hinsdale, IL has 3 bedrooms, 3 bathrooms, 2,537 square feet of living space and a 0.17-acre lot.

When was 640 Mills St, Hinsdale, IL built?

640 Mills St, Hinsdale, IL was built in 1998, making it 28 years old. It is a split level home. The building has 2 stories.

What schools serve 640 Mills St, Hinsdale, IL?

640 Mills St, Hinsdale, IL is assigned to The Lane Elementary School (elementary), rated A; Hinsdale Middle School (middle), rated B+; Hinsdale Central High School (high), rated A. All sit in Hinsdale Township High School District 86. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 Mills St, Hinsdale, IL compare to other homes in Hinsdale 60521?

Among the 6,715 homes in Hinsdale 60521, it is worth more than 37% of them ($998,626 against a typical $1,234,795), its price per square foot is higher than 37% of them ($394 against a typical $430), it is bigger than 39% of them (2,537 ft² against a typical 2,870 ft²), its lot is bigger than 19% of them (0.17 ac against a typical 0.26 ac) and it is newer than 71% of them (1998 against a typical 1978). Measured against all of Cook County, it is worth more than 94% 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 640 Mills St, Hinsdale, IL?

The 2023 property tax bill for 640 Mills St, Hinsdale, IL was $13,048. The county assessed it at $69,001.

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