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Single Family ResidenceResidential
$556,086$230 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

10666 ROUTE 166

MARION, IL 62959
0
Baths
2,414 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.
21.38 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$556K
$531K low$581K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,238 (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.$107,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,940
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$95,160
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$107,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$318,675

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.49
19
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
32
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
85
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
89
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
23
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.3 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 Residence
CountyWILLIAMSON
Lot (acres)The size of the land the home sits on, from county records.21.38
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
HeatingThe type of heating system in the home.Heat Pump
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 577 ft²

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

E
Crab Orchard Elementary SchoolB
Elementary · Grades PK–8 · 3.2 mi
H
Crab Orchard High SchoolB
High · Grades 9–12 · 3.2 mi

District: Crab Orchard Community Unit School District 3

Neighborhood · ZIP 62959These 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.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.283

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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
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.27,489
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.191 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,924
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$88,689
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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

10666 Route 166 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.

  • Among the most valuable homes in Williamson County
  • Costs more per square foot than 97% of homes in Williamson County
  • Bigger than 91% of homes in Williamson County
  • Has a bigger lot than 98% of homes in Marion 62959
  • Newer than 86% of homes in Marion 62959

What homes are worth in Marion 62959

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

This home
$56K$576K

This home is worth more than 98% of homes in Marion 62959.

How it measures up in Marion 62959

The dot is this home. The mark in the middle is the typical home in Marion 62959.

Estimated value$556,086
CheaperTypical $183,849Pricier

Pricier than 98% of homes nearby

Price per ft²$230
CheaperTypical $126Pricier

Pricier than 95% of homes nearby

Living area2,414 ft²
SmallerTypical 1,512 ft²Bigger

Bigger than 88% of homes nearby

Lot size21.38 ac
SmallerTypical 0.36 acBigger

Bigger than 98% of homes nearby

Year built2003
OlderTypical 1971Newer

Newer than 86% of homes nearby

How 10666 Route 166 ranks against every home in each area.
MeasureThis homeMarion 62959Williamson County
Estimated valuepricier than$556,08698% of homesalmost all homes
Price per ft²pricier than$23095% of homes97% of homes
Living areabigger than2,414 ft²88% of homes91% of homes
Lot sizebigger than21.38 ac98% of homes98% of homes
Year builtnewer than200386% of homes86% of homes

About 10666 Route 166

How much is 10666 Route 166, Marion, IL worth?

The TopHap Estimate for 10666 Route 166, Marion, IL is $556,086 as of Jul 14, 2026. The likely range is $531,108 to $581,064. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 10666 Route 166, Marion, IL last sell?

10666 Route 166, Marion, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 10666 Route 166, Marion, IL?

10666 Route 166, Marion, IL has 2,414 square feet of living space and a 21.38-acre lot.

When was 10666 Route 166, Marion, IL built?

10666 Route 166, Marion, IL was built in 2003, making it 23 years old. The building has 1 story.

What schools serve 10666 Route 166, Marion, IL?

10666 Route 166, Marion, IL is assigned to Crab Orchard Elementary School (elementary), rated B; Crab Orchard High School (high), rated B. All sit in Crab Orchard Community Unit School District 3. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 10666 Route 166, Marion, IL compare to other homes in Marion 62959?

Among the 11,262 homes in Marion 62959, it is worth more than 98% of them ($556,086 against a typical $183,849), its price per square foot is higher than 95% of them ($230 against a typical $126), it is bigger than 88% of them (2,414 ft² against a typical 1,512 ft²), its lot is bigger than 98% of them (21.38 ac against a typical 0.36 ac) and it is newer than 86% of them (2003 against a typical 1971). Measured against all of Williamson County, it is worth more than almost all 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 10666 Route 166, Marion, IL?

The 2025 property tax bill for 10666 Route 166, Marion, IL was $4,238. The county assessed it at $107,100.

More homes on Route 166

Closest homes

More homes in Marion 62959

Assigned schools

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