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 12 of properties

6602 South Union Road

Union, IL 60180

6604 Elm Street

Union, IL 60180

6606 Elm Street

Union, IL 60180

6606 Main Street

Union, IL 60180

6606 Olson Road

Union, IL 60180

6606 South Union Road

Union, IL 60180

6606 Vine Street

Union, IL 60180

6607 Main Street

Union, IL 60180

6610 South Union Road

Union, IL 60180

6612 South Union Road

Union, IL 60180

6614 South Union Road

Union, IL 60180

6615 Main Street

Union, IL 60180

6616 Elm Street

Union, IL 60180

6619 Dunham Road

Union, IL 60180

6619 Main Street

Union, IL 60180

6620 Main Street

Union, IL 60180

6621 Main Street

Union, IL 60180

6623 Main Street

Union, IL 60180

6627 Main Street

Union, IL 60180

6705 Olson Road

Union, IL 60180

6707 Dunham Road

Union, IL 60180

6709 Main Street

Union, IL 60180

6719 Dunham Road

Union, IL 60180

6821 Main Street

Union, IL 60180

6821 Main Street

Union, IL 60180

6913 Mccue Road

Union, IL 60180

6916 Dunham Road

Union, IL 60180

6916 Dunham Road

Union, IL 60180

6916 Dunham Road

Union, IL 60180

7000 Olson Road

Union, IL 60180

7000 Olson Road

Union, IL 60180

7000 Olson Road

Union, IL 60180

7007 Dunham Road

Union, IL 60180

7007 Dunham Road

Union, IL 60180

7105 Great Northern Trail

Union, IL 60180

7106 Dunham Road

Union, IL 60180

7112 Great Northern Trail

Union, IL 60180

7113 South Union Road

Union, IL 60180

7114 Dunham Road

Union, IL 60180

7115 Northrup Road

Union, IL 60180

7115 South Union Road

Union, IL 60180

7125 Great Northern Trail

Union, IL 60180

7142 Great Northern Trail

Union, IL 60180

7145 Great Northern Trail

Union, IL 60180

7165 Great Northern Trail

Union, IL 60180

7172 Great Northern Trail

Union, IL 60180

7185 Great Northern Trail

Union, IL 60180

7192 Great Northern Trail

Union, IL 60180

7212 Great Northern Trail

Union, IL 60180

7213 South Union Road

Union, IL 60180

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