Union
Property Data

Mchenry County, Illinois

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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 15 of properties

9401 Emily Lane

Union, IL 60180

9405 Knolltop Road

Union, IL 60180

9406 Knolltop Road

Union, IL 60180

9411 Knolltop Road

Union, IL 60180

9412 Knolltop Road

Union, IL 60180

9418 Knolltop Road

Union, IL 60180

9419 Knolltop Road

Union, IL 60180

9419 Knolltop Road

Union, IL 60180

9507 Knolltop Road

Union, IL 60180

9508 Mels Way

Union, IL 60180

9508 Stacy Lane

Union, IL 60180

9510 Knolltop Road

Union, IL 60180

9511 Emily Lane

Union, IL 60180

9513 Knolltop Road

Union, IL 60180

9513 Seeman Road

Union, IL 60180

9514 Emily Lane

Union, IL 60180

9514 Knolltop Road

Union, IL 60180

9514 Mels Way

Union, IL 60180

9514 Seeman Road

Union, IL 60180

9514 Stacy Lane

Union, IL 60180

9515 Seeman Road

Union, IL 60180

9517 Seeman Road

Union, IL 60180

9519 Knolltop Road

Union, IL 60180

9520 Stacy Lane

Union, IL 60180

9525 Knolltop Road

Union, IL 60180

9530 Knolltop Road

Union, IL 60180

9531 Knolltop Road

Union, IL 60180

9531 Knolltop Road

Union, IL 60180

9601 Mels Way

Union, IL 60180

9602 Mels Way

Union, IL 60180

9603 Seeman Road

Union, IL 60180

9605 Stacy Lane

Union, IL 60180

9606 Knolltop Road

Union, IL 60180

9606 Stacy Lane

Union, IL 60180

9607 Knolltop Road

Union, IL 60180

9611 Knolltop Road

Union, IL 60180

9611 Stacy Lane

Union, IL 60180

9612 Knolltop Road

Union, IL 60180

9612 Mels Way

Union, IL 60180

9612 Stacy Lane

Union, IL 60180

9617 Seeman Road

Union, IL 60180

9617 Seeman Road

Union, IL 60180

9618 Emily Lane

Union, IL 60180

9618 Stacy Lane

Union, IL 60180

9619 Knolltop Road

Union, IL 60180

9619 Seeman Road

Union, IL 60180

9620 Knolltop Road

Union, IL 60180

9701 Knolltop Road

Union, IL 60180

9703 Seeman Road

Union, IL 60180

9704 Stacy Lane

Union, IL 60180

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