Mchenry County, IL
Property Data

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

Total Properties

150,412

Average Home Price

$383,851

Average Square Feet

2,298

Price per Sq Ft

$192
Illinois

ZIP Codesby Total Properties

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Total Properties
72119,529

DistributionTotal Properties

Property

Total Properties

150,412

Median Home Price

$350,000

Average Home Price

$383,851

Average Square Feet

2,298

Price per Sq Ft

$192

Recent Sales (12mo)

2,120

YoY Price Change

4.4%

Sales Velocity

-47.3%

Mchenry County, IL housing and demographic statistics

Selected Census estimates for Mchenry County, IL
MeasureEstimate
Population312,591
Households117,594
Housing units121,329
Median household income$104,802
Median monthly gross rent$1,401
Median owner-occupied home value$308,100
Owner-occupied share of occupied housing82.7%
Vacant share of housing units3.1%
Renters paying 30% or more of income on rent47.9%

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.

Area property statistics

Recorded property characteristics and residential parcel-sale records for Mchenry County, 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.

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 records3,945Recorded——
Average recorded sale amount$372,120Recorded——

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: May 2026; not verified completeness.

Recorded property statistics

Reported property statistics for Mchenry County, IL
MeasureMchenry County, ILIllinois
Median recorded sale amount$350,000$323,000
Recorded amount, 10th percentile$210,000$138,000
Recorded amount, 90th percentile$590,000$731,400
Average recorded floor area (sq ft)2,2982,048
Average recorded bedrooms3.23.2
Average recorded bathrooms2.52
Median year built19901968
Condominium share of properties0.1%9.4%

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: .

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

State input files published Oct 23, 2026–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.

Parcel sale records
Oct 1, 2025–Sep 30, 2026
3,805
Model estimateHistorical error-adjusted range: 3,627–3,723.
Median sale amount
September 2026
$380,000
Model estimateHistorical error-adjusted range: $349,676–$444,308.
Median-amount change
September 2026 versus September 2025
+8.1%
Model estimateHistorical error-adjusted range: -0.5%–+26.4%.

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: May 2026; not a verified completeness date.

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