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Residential - Vacant LandResidential
$231,331
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 85How 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

17501 JOHNSON ST

UNION, IL 60180
0
Baths
382 ft²
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$231K
$196K low$267K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$32 (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.$491 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$491
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$444
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,473

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.10 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.Residential - Vacant Land
CountyMcHenry
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 · 2.6 mi
M
Marengo Community Middle SchoolB-
Middle · Grades 6–8 · 3.0 mi
E
Locust Elementary SchoolB+
Elementary · Grades PK–3 · 3.1 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

17501 Johnson 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 90% of homes in Union 60180
  • Among the smallest lots in Union 60180

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
$174K$790K

This home is worth more than 10% 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$231,331
CheaperTypical $398,529Pricier

Pricier than 10% of homes nearby

Lot size382 ft²
SmallerTypical 1.17 acBigger

Smaller than almost all homes nearby

How 17501 Johnson St ranks against every home in each area.
MeasureThis homeUnion 60180McHenry County
Estimated valuepricier than$231,33110% of homes11% of homes
Lot sizebigger than382 ft²almost no homesalmost no homes

About 17501 Johnson St

How much is 17501 Johnson St, Union, IL worth?

The TopHap Estimate for 17501 Johnson St, Union, IL is $231,331 as of Sep 24, 2026. The likely range is $195,908 to $266,754. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

What schools serve 17501 Johnson St, Union, IL?

17501 Johnson 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 17501 Johnson St, Union, IL compare to other homes in Union 60180?

Among the 655 homes in Union 60180, it is worth more than 10% of them ($231,331 against a typical $398,529) and its lot is bigger than almost none of them (382 ft² against a typical 1.17 ac). Measured against all of McHenry County, it is worth more than 11% 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 17501 Johnson St, Union, IL?

The 2024 property tax bill for 17501 Johnson St, Union, IL was $32. The county assessed it at $491.

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Assigned schools

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