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Single Family ResidenceResidential
$215,810$231 / 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 87How 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 $100,000 on May 9, 1994

17819 JEFFERSON ST

UNION, IL 60180
0
Baths
933 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.
0.55 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
Year BuiltThe year the home was originally built, according to county records.

Valuation

$216K
$188K low$244K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$100,000 · May 9, 1994

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,534 (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.$62,034 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$14,288
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$47,746
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$56,099
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$186,102

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMcHenry
Lot (acres)The size of the land the home sits on, from county records.0.55
HeatingThe type of heating system in the home.None

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

H
Marengo High SchoolB-
High · Grades 9–12 · 2.3 mi
M
Marengo Community Middle SchoolB-
Middle · Grades 6–8 · 2.7 mi
E
Locust Elementary SchoolB+
Elementary · Grades PK–3 · 2.8 mi

District: Marengo-Union Elementary Consolidated District 165

Neighborhood · ZIP 60180These 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.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.3,015
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.145 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$125,446
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$133,187
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.36 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

17819 Jefferson 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 92% of homes in Union 60180
  • Costs more per square foot than 76% of homes in Union 60180
  • Smaller than 97% of homes in Union 60180
  • Has a bigger lot than 76% of homes in McHenry County
  • Older than 92% of homes in McHenry County

What homes are worth in Union 60180

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

This home
$172K$790K

This home is worth more than 8% of homes in Union 60180.

How it measures up in Union 60180

The dot is this home. The mark in the middle is the typical home in Union 60180.

Estimated value$215,810
CheaperTypical $398,529Pricier

Pricier than 8% of homes nearby

Price per ft²$231
CheaperTypical $185Pricier

Pricier than 76% of homes nearby

Living area933 ft²
SmallerTypical 2,163 ft²Bigger

Bigger than 3% of homes nearby

Lot size0.55 ac
SmallerTypical 1.17 acBigger

Bigger than 37% of homes nearby

Year built1940
OlderTypical 1975Newer

Newer than 26% of homes nearby

How 17819 Jefferson St ranks against every home in each area.
MeasureThis homeUnion 60180McHenry County
Estimated valuepricier than$215,8108% of homes8% of homes
Price per ft²pricier than$23176% of homes71% of homes
Living areabigger than933 ft²3% of homes6% of homes
Lot sizebigger than0.55 ac37% of homes76% of homes
Year builtnewer than194026% of homes8% of homes

About 17819 Jefferson St

How much is 17819 Jefferson St, Union, IL worth?

The TopHap Estimate for 17819 Jefferson St, Union, IL is $215,810 as of Sep 24, 2026. The likely range is $187,653 to $243,967. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 17819 Jefferson St, Union, IL last sell?

17819 Jefferson St, Union, IL last sold on May 9, 1994 for $100,000, according to the county's recorded deed.

How big is 17819 Jefferson St, Union, IL?

17819 Jefferson St, Union, IL has 933 square feet of living space and a 0.55-acre lot.

When was 17819 Jefferson St, Union, IL built?

17819 Jefferson St, Union, IL was built in 1940, making it 86 years old.

What schools serve 17819 Jefferson St, Union, IL?

17819 Jefferson St, Union, IL is assigned to Marengo High School (high), rated B-; Marengo Community Middle School (middle), rated B-; Locust Elementary School (elementary), rated B+. All sit in Marengo-Union Elementary Consolidated District 165. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 17819 Jefferson St, Union, IL compare to other homes in Union 60180?

Among the 655 homes in Union 60180, it is worth more than 8% of them ($215,810 against a typical $398,529), its price per square foot is higher than 76% of them ($231 against a typical $185), it is bigger than 3% of them (933 ft² against a typical 2,163 ft²), its lot is bigger than 37% of them (0.55 ac against a typical 1.17 ac) and it is newer than 26% of them (1940 against a typical 1975). Measured against all of McHenry County, it is worth more than 8% 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 17819 Jefferson St, Union, IL?

The 2024 property tax bill for 17819 Jefferson St, Union, IL was $3,534. The county assessed it at $62,034.

More homes on Jefferson St

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Assigned schools

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