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Single Family ResidenceResidential
$150,499$105 / 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 93How 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

12843 ROUTE 166

MARION, IL 62959
0
Baths
1,428 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.
0.68 ac
Lot SizeThe size of the land the home sits on, from county records.
1954
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$150K
$140K low$161K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,439 (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.$30,820 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,990
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$24,830
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$30,820
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$92,460

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.0.68
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.Gas
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 · 156 ft²

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

E
Washington Elementary SchoolA
Elementary · Grades KG–5 · 3.7 mi
M
Marion Jr High SchoolC
Middle · Grades 6–8 · 4.8 mi
H
Marion High SchoolC
High · Grades 9–12 · 4.9 mi

District: Marion Community Unit School District 2

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

12843 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.

  • Costs less per square foot than 68% of homes in Marion 62959
  • Has a bigger lot than 67% of homes in Williamson County
  • Older than 65% 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 38% 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$150,499
CheaperTypical $183,849Pricier

Pricier than 38% of homes nearby

Price per ft²$105
CheaperTypical $126Pricier

Pricier than 32% of homes nearby

Living area1,428 ft²
SmallerTypical 1,512 ft²Bigger

Bigger than 45% of homes nearby

Lot size0.68 ac
SmallerTypical 0.36 acBigger

Bigger than 66% of homes nearby

Year built1954
OlderTypical 1971Newer

Newer than 35% of homes nearby

How 12843 Route 166 ranks against every home in each area.
MeasureThis homeMarion 62959Williamson County
Estimated valuepricier than$150,49938% of homes50% of homes
Price per ft²pricier than$10532% of homes44% of homes
Living areabigger than1,428 ft²45% of homes50% of homes
Lot sizebigger than0.68 ac66% of homes67% of homes
Year builtnewer than195435% of homes41% of homes

About 12843 Route 166

How much is 12843 Route 166, Marion, IL worth?

The TopHap Estimate for 12843 Route 166, Marion, IL is $150,499 as of Jul 14, 2026. The likely range is $139,715 to $161,283. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12843 Route 166, Marion, IL last sell?

12843 Route 166, Marion, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 12843 Route 166, Marion, IL?

12843 Route 166, Marion, IL has 1,428 square feet of living space and a 0.68-acre lot.

When was 12843 Route 166, Marion, IL built?

12843 Route 166, Marion, IL was built in 1954, making it 72 years old. The building has 1 story.

What schools serve 12843 Route 166, Marion, IL?

12843 Route 166, Marion, IL is assigned to Washington Elementary School (elementary), rated A; Marion Jr High School (middle), rated C; Marion High School (high), rated C. All sit in Marion Community Unit School District 2. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12843 Route 166, Marion, IL compare to other homes in Marion 62959?

Among the 11,262 homes in Marion 62959, it is worth more than 38% of them ($150,499 against a typical $183,849), its price per square foot is higher than 32% of them ($105 against a typical $126), it is bigger than 45% of them (1,428 ft² against a typical 1,512 ft²), its lot is bigger than 66% of them (0.68 ac against a typical 0.36 ac) and it is newer than 35% of them (1954 against a typical 1971). Measured against all of Williamson County, it is worth more than 50% 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 12843 Route 166, Marion, IL?

The 2025 property tax bill for 12843 Route 166, Marion, IL was $2,439. The county assessed it at $30,820.

More homes on Route 166

Closest homes

More homes in Marion 62959

Assigned schools

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