Union
Property Data

Mchenry County, Illinois

Explore accurate parcel and ownership records,
directly sourced from county assessors.

Mchenry County

ZIP Codesby Total Population

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Total Population
1,8311,831

DistributionTotal Population

No data available

Demographics

Total Population

1,831

Median Age

39.7

Population Under 18

24.3%

Population 65+

14.3%

Total Households

704

Average Household Size

2.60

Union, IL housing and demographic statistics

ZIP/ZCTA areas can cross city and county boundaries. Each row describes its ZIP/ZCTA area, not the city as a whole. These values are not combined into a city estimate.

Individual ZIP/ZCTA estimates associated with Union, IL
ZIP/ZCTAPopulationMedian household incomeMedian monthly gross rentOwner-occupied share
601801,831$110,070$1,71278.6%

Source: U.S. Census Bureau American Community Survey (ACS), 2020–2024 five-year estimates, via Realie. Measurement period: –. Published by the Census Bureau on ; published by Realie on . These are five-year estimates, not a measurement of current conditions. — indicates unavailable or suppressed data.

Area property statistics

Recorded property characteristics and residential parcel-sale records for Union, IL. Sale amounts describe recorded transfers, not asking prices or appraisals. Each measure uses records with that information available.

Sale records use the AVM's residential, amount, floor-area, year-built, price-per-area, deed, buyer-relationship and distress filters. Known multi-parcel deals are also excluded. Unknown package flags are not proof of a single-parcel sale. Counts represent eligible parcel sale records. Recorded annual averages require at least 10 eligible sales. Projections must have enough history and pass checks against earlier recorded sales. Recent sales can be underreported; different coverage between years can affect the changes.

City measurements cover the selected county's portion of the city.

Annual sales comparison

Calendar 2025 recorded sales versus calendar 2026 model projections. Both years cover January 1–December 31. Change compares the 2026 projection with the recorded 2025 value. Annual average amounts weight each month by its sales count; they are not monthly medians.

Calendar-year sales comparison
Metric20252026 projectedChange (%)
Residential sale records15Recorded——
Average recorded sale amount$314,767Recorded——

Projections are not confirmed transactions or property valuations. Recent sales can be underreported; different coverage between years can affect the change. Unsupported values remain unavailable. Ranges reflect historical model errors, not confidence intervals. Annual comparison calculated . Assumed observation cutoff: April 2026; not verified completeness.

Recorded property statistics

Reported property statistics for Union, IL
MeasureUnion, ILMchenry County, IL
Median recorded sale amount$369,500$350,000
Recorded amount, 10th percentile$259,800$210,000
Recorded amount, 90th percentile$455,600$590,000
Average recorded floor area (sq ft)2,6942,298
Average recorded bedrooms3.33.2
Average recorded bathrooms2.22.5
Median year built19751990
Condominium share of properties0%0.1%

Union, IL: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 24, 2026. Calculated . Published . Dataset last refreshed: .

Mchenry County, IL: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 24, 2026. Calculated . Published . Dataset last refreshed: .

Source: Realie property-record aggregates. Input publication and calculation dates do not establish complete transaction coverage. Missing measures are shown as — or omitted.

Other recent-period estimates

These use different periods from the calendar-year comparison. Estimates extend parcel-record counts and recorded amounts; they are not confirmed current transactions or individual-property values.

No supported recent-period estimates are available for this area. Recorded statistics above remain available.

Transaction coverage has not been verified. Known multi-parcel deals are excluded; missing package flags do not establish that every remaining sale covers one parcel. Amount change compares monthly record medians, not the appreciation of the same homes. Ranges reflect historical model errors; they are not confidence intervals and can exclude the point estimate. Assumed observation cutoff: April 2026; not a verified completeness date.

Properties in Union

Showing page 1 of properties

10004 Fair Lane

Union, IL 60180

10005 Fair Lane

Union, IL 60180

10006 Stacy Lane

Union, IL 60180

10009 Fair Lane

Union, IL 60180

10012 Fair Lane

Union, IL 60180

10012 Stacy Lane

Union, IL 60180

10013 Fair Lane

Union, IL 60180

10013 Stacy Lane

Union, IL 60180

10017 Stacy Lane

Union, IL 60180

10018 Fair Lane

Union, IL 60180

10018 Stacy Lane

Union, IL 60180

10102 Stacy Lane

Union, IL 60180

10103 Fair Lane

Union, IL 60180

10104 Fair Lane

Union, IL 60180

10105 Stacy Lane

Union, IL 60180

10109 Fair Lane

Union, IL 60180

10110 Fair Lane

Union, IL 60180

10110 Stacy Lane

Union, IL 60180

10114 Stacy Lane

Union, IL 60180

10115 Fair Lane

Union, IL 60180

10116 Ridge Lane

Union, IL 60180

10117 Stacy Lane

Union, IL 60180

10118 Fair Lane

Union, IL 60180

10119 Ridge Lane

Union, IL 60180

10119 Seeman Road

Union, IL 60180

10119 Seeman Road

Union, IL 60180

10120 Ridge Lane

Union, IL 60180

10121 Fair Lane

Union, IL 60180

10123 Stacy Lane

Union, IL 60180

10207 Ridge Lane

Union, IL 60180

10211 Ridge Lane

Union, IL 60180

10215 Ridge Lane

Union, IL 60180

1440 Marengo Road

Union, IL 60180

14420 Marengo Road

Union, IL 60180

14511 Marengo Road

Union, IL 60180

14511 Marengo Road

Union, IL 60180

14531 Marengo Road

Union, IL 60180

14609 Marengo Road

Union, IL 60180

14614 Marengo Road

Union, IL 60180

14622 Marengo Road

Union, IL 60180

14701 Marengo Road

Union, IL 60180

14718 Marengo Road

Union, IL 60180

15009 Marengo Road

Union, IL 60180

15019 Marengo Road

Union, IL 60180

15020 Marengo Road

Union, IL 60180

15040 Marengo Road

Union, IL 60180

15050 Marengo Road

Union, IL 60180

15107 Marengo Road

Union, IL 60180

15109 Marengo Road

Union, IL 60180

15113 Marengo Road

Union, IL 60180

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