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McHenry County, IL Parcels & GIS Data

McHenry County, IL parcel data: 145,736 property records with owner names, assessed values, land use, acreage, and addresses. Preview and download.

Land Records publishes McHenry County, Illinois parcel data covering 145,736 property records.

This page documents parcel-level coverage for McHenry County, Illinois. Each parcel record carries its boundary polygon (GIS geometry) along with attributes such as the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and most recent sale price and date. Exact fill rates for McHenry County are listed in the attribute-coverage table below. Preview the data in the interactive explorer, or download the complete McHenry County property dataset.

McHenry County is located in the U.S. state of Illinois. According to the 2020 Census, it had a population of 310,229, making it the sixth-most populous county in Illinois. Its county seat is Woodstock.

FIPS 17111

Official county website: http://www.ci.mchenry.il.us

The FIPS code for McHenry County is 17111.

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Attribute coverage

McHenry County contains 145,736 parcels in the current dataset. Column coverage is the percentage of those parcels for which the attribute is populated (non-NULL). For the LBCS columns, only real classifications count: the to-be-determined and not-applicable placeholder codes are excluded.

ColumnCoverageRecords populated
lrid100%145,736
parcelid99.9%145,636
parcelid297.8%142,489
ogparcelid78.2%113,980
ogparcelid276.1%110,833
parentid<0.1%0
stackid<0.1%0
geoid100%145,736
statefp100%145,736
countyfp100%145,736
countyname100%145,736
cousubfp100%145,736
cousubname100%145,736
tractce100%145,736
tractname100%145,736
taxacctnum97.4%141,999
taxyear97.8%142,491
taxdistrict<0.1%0
usecode64.9%94,606
usedesc98.6%143,729
zoningcode33.8%49,320
zoningdesc8.9%12,910
numbldgs91.1%132,808
numunits61.1%89,018
yearbuilt<0.1%0
numfloors62.0%90,371
bldgsqft<0.1%0
bedrooms<0.1%0
halfbaths<0.1%0
fullbaths<0.1%0
imprvalue<0.1%0
landvalue<0.1%0
agvalue<0.1%0
totalvalue<0.1%0
taxacres6.8%9,846
calcarea100%145,736
saleamt<0.1%0
saledate<0.1%0
ownertype78.0%113,708
ownername99.7%145,348
owneraddr36.7%53,512
ownercity31.8%46,361
ownerstate31.7%46,249
ownerzip31.8%46,361
parceladdr99.2%144,535
parcelcity99.2%144,531
parcelstate100%145,736
parcelzip100%145,736
legaldesc32.3%47,052
township100%145,733
section100%145,733
qtrsection100%145,733
range100%145,733
plssdesc100%145,733
book<0.1%0
page<0.1%0
block<0.1%0
lot<0.1%0
parceltype0.9%1,303
accesstype1.4%2,066
iucnclass0.8%1,141
placename6.0%8,760
placetype5.7%8,377
firmid99.8%145,507
firmdate99.8%145,507
fldzone99.8%145,507
zonesubty95.2%138,786
staticbfe0.6%838
elevmin99.8%145,422
elevmax99.8%145,422
elevavg99.8%145,422
fireplaces<0.1%0
heating<0.1%0
heatfuel<0.1%0
cooling<0.1%0
foundation<0.1%0
roofcover<0.1%0
siding<0.1%0
bldgtype<0.1%0
naicscode4.5%6,575
frsid0.4%531
dfrurl0.4%531
caapermit0.4%531
cwapermit0.4%531
rcrapermit0.4%531
updated100%145,736
centroidx100%145,736
centroidy100%145,736
surfpointx100%145,736
surfpointy100%145,736
geom100%145,736
extras99.3%144,728
ownerlist77.9%113,542
placefp73.8%107,611
zoningurl32.2%46,894
lbcsactivity97.2%141,663
lbcsfunction97.0%141,368
lbcstype98.0%142,839
lbcscharacter98.1%142,934
lbcsownership99.7%145,348
sourceurl32.3%47,076

Schema mapping

How source columns from the acquired McHenry County GIS layers map into the harmonized entity schemas and assemble into the published parcel table, alongside supplemented fields (elevation, flood zone) and deterministic columns.

Schema mapping — McHenry County, Illinois (17111) 1 entity · most recent acquisition per entity · generated 2026-10-10 direct column transformed (expression) geometry extras json supplemented determined ALL ENTITIES → FINAL PARCEL SCHEMA Harmonized entity columns assemble into publish.parcel_layer — matched by column name. Supplemented fields show their fill rate in this county. SOURCE COLUMNS HARMONIZED ENTITIES PUBLISH.PARCEL_LAYER ZONING geom zoneid zonedesc zoneordinancename zonenotes 11 cols ⇢ geom zoningcode zoningdesc ordinance notes extras determined · ground truth 100% lrid 100% geoid 100% statefp 100% countyfp 100% countyname 100% cousubfp 100% cousubname 100% tractce 100% tractname 97.8% taxyear 100% updated geom · derived from geometry geom dem.us_1m · USGS 1m DEM 100% elevmin 100% elevmax 100% elevavg s_fld_haz_ar · FEMA NFHL 100% fldzone 95.2% zonesubty 0.6% staticbfe 100% firmdate 100% firmid supplemented · derived / other pipelines 100% parcelid 97.8% parcelid2 78.2% ogparcelid 76.1% ogparcelid2 97.4% taxacctnum 64.9% usecode 98.6% usedesc 91.1% numbldgs 61.1% numunits 62.0% numfloors 78.0% ownertype 100% ownername 99.2% parceladdr 99.2% parcelcity 100% parcelstate 100% parcelzip 100% township 100% section 100% qtrsection 100% range 100% plssdesc 77.9% ownerlist 73.8% placefp 97.2% lbcsactivity 97.0% lbcsfunction 98.0% lbcstype 98.1% lbcscharacter 100% lbcsownership lrid parcelid parcelid2 ogparcelid ogparcelid2 geoid statefp countyfp countyname cousubfp cousubname tractce tractname taxacctnum taxyear usecode usedesc zoningcode zoningdesc numbldgs numunits numfloors calcarea ownertype ownername parceladdr parcelcity parcelstate parcelzip township section qtrsection range plssdesc firmid firmdate fldzone zonesubty staticbfe elevmin elevmax elevavg updated centroidx centroidy surfpointx surfpointy geom extras ownerlist placefp lbcsactivity lbcsfunction lbcstype lbcscharacter lbcsownership publish.parcel_layer columns not fed by these sources (45) — empty or below 50% fill in this county parentid, stackid, taxdistrict, yearbuilt, bldgsqft, bedrooms, halfbaths, fullbaths, imprvalue, landvalue, agvalue, totalvalue, taxacres saleamt, saledate, owneraddr, ownercity, ownerstate, ownerzip, legaldesc, book, page, block, lot, parceltype, accesstype, iucnclass, placename placetype, fireplaces, heating, heatfuel, cooling, foundation, roofcover, siding, bldgtype, naicscode, frsid, dfrurl, caapermit, cwapermit rcrapermit, zoningurl, sourceurl ZONING 5 mapped · 11 kept in extras · 4 unmapped (NULL) SOURCE COLUMNS HARMONIZED → ZONING geom zoneid zonedesc zoneordinancename zonenotes geom zoningcode zoningdesc ordinance notes extras · 11 source columns preserved as json agencyid, agencydesc, zonepin14, zonelabel, zonedate zoneeditor, zonelegacy, commonid, globalid, created_user last_edited_user extras not present in source — filled with NULL (4) zoningtype, setbacks, restrictions, sourceurl

Neighboring counties

Parcel data for counties bordering McHenry County:

Frequently asked questions

Where can I find McHenry County, IL parcel and GIS data?

Land Records publishes a McHenry County, IL parcel dataset in which every parcel carries its boundary polygon (GIS geometry) along with ownership, assessed value, land use, acreage, and sale history. Preview it in the interactive explorer on this page, or download the full McHenry County, IL dataset as a GeoPackage or CSV.

How many parcels are in McHenry County, IL?

The current dataset contains 145,736 parcel records for McHenry County, IL, each with its boundary geometry and assessor attributes.

What is the FIPS code for McHenry County, IL?

The FIPS code for McHenry County, IL is 17111.

What information does each McHenry County, IL parcel record include?

Each McHenry County, IL parcel record includes the parcel ID/APN, owner name and mailing address, situs (property) address, assessed land and improvement values, acreage, land-use and zoning codes, year built, and the most recent sale price and date — plus the parcel boundary polygon. Per-attribute fill rates are listed in the coverage table on this page.

Is McHenry County, IL parcel data free?

You can preview McHenry County, IL parcels for free in the interactive explorer. The complete dataset is available as a one-time download or through the nationwide parcel web service; see the download options on this page for current pricing.

Does McHenry County, IL have an official GIS or property records website?

Yes — the official McHenry County, IL government website is linked in the county details above. Land Records standardizes McHenry County, IL assessor and recorder records into a single nationwide parcel schema with GIS boundary geometry.

On this page

Attribute coverageSchema mappingNeighboring countiesFAQRelated