Blog · October 14, 2026 · Illinois
The Highland GIS Map and the county parcel viewer
Parcel data for Highland comes from the county, and the viewer is free.
Main page: Madison County, IL GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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For any lot around Troy, the Highland GIS map shows lines, owner names and parcel numbers. In this Highland guide: where that map lives, the fastest ways to search, and the limits worth knowing.
Where the Highland GIS map lives
For land near Troy, some cities also run their own GIS portal for utilities or zoning; that can add detail on top of the county map.
The viewer Madison County publishes
Go first to the Madison County parcel viewer; it maps each tax parcel in the county, Grantfork included. For property near Grantfork, type a street address, an owner's name or a parcel number, and the viewer zooms to the match. For property near Alhambra, a pop-up or side panel typically gives the owner of record, acreage on the tax roll, the parcel number and sometimes recent sales.
Reading the legal description
Illinois follows the Public Land Survey System, so rural legal descriptions near Alhambra cite section, township and range. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though corrections make some sections near Pierron odd-sized. Copy the legal description from the record for the parcel near Pierron before you request a deed or survey.
Printing and saving
Save a screenshot of the lot near Troy and its record panel, so you have it when calling an office.
Field tips
The parcel map usually runs in a mobile browser, useful out on a road near Grantfork, though signal can drop in rural spots. A screenshot of the parcel near Grantfork with its ID keeps working without signal.
Deeds, plats and who keeps them
The map is an index, not the title: recorded deeds, plats and easements for land near Pierron sit with the county Recorder of Deeds (in many counties the County Clerk and Recorder). Inherited tracts around Marine can trace back through a long string of deeds, so a title company can sort it out before a purchase.
Next door to Madison County
Madison County meets Bond County, Clinton County, Jersey County, Macoupin County, and Montgomery County, all with their own assessor records. A tract near the line by Alhambra may be split in two county records, so look at the neighboring map as well. If the land is near Alhambra, our state page links each bordering county map across Illinois.
City limits and county records
Highland is part of Madison County, Illinois, which means parcel data comes from the county. Local government in Highland handles matters such as zoning, permits and utilities inside its limits, while the county keeps the tax map. Lots just outside the city limits toward St. Jacob usually falls under county rules, not municipal ones.
Getting your bearings
Edwardsville serves as the county seat, which is where the courthouse records live. You'll also find Grantfork, Marine, Pierron, and St. Jacob. Roughly 262,752 people call Madison County home (Census estimate, 2023) on about 716 square miles. Madison County dates to 1812, and some chains of title near Troy are long. Features like Mississippi River and Horseshoe Lake make handy reference points on the map near Pierron.
Search tips
By address works best for lots in Highland; owner names are usually entered last name first. Closer to Pierron, searching by parcel number never misses, and it's printed on tax bills.
When the map won't load
When the map won't open around Troy, switch browsers or turn off pop-up blockers; links occasionally change, and our directory page keeps the current one.
Layers worth turning on
In and around Troy, look in the layer list for municipal boundaries, floodplain and sometimes zoning; not every viewer has them all.
Which office to call
Anything recorded against property around Pierron are with the county Recorder of Deeds (in many counties the County Clerk and Recorder), sometimes only in person. Questions about what you can build around Pierron go to planning, building or health offices, town or county, depending on location.
Reading a parcel record
A parcel card near Alhambra normally gives owner, mailing address, assessed value and acreage.
Before you lean on the lines
Parcel lines are drawn for taxes, not surveyed, so a fence near Pierron can sit a few yards off the line on screen. Out toward Pierron, records update in batches, so a deed recorded last month can take weeks to appear.
Frequently asked
Are parcel lines on the map exact in Highland?
Usually, lines near Pierron can be off by several feet or more.
Does the map show city limits for this town near Granite City?
Short answer: aerials near Troy are usually available as a basemap; open the layer list to see what's there.
Where else can I find maps of Highland?
For most people, Highland may publish zoning or utility maps separately, while parcel data usually comes from the county.
How often is the parcel map updated around Marine?
For acreage around Alhambra, updates come in batches.
Is the parcel map a survey in Highland?
No; boundary questions near Grantfork need a licensed surveyor, so a fence may sit off the line
Open the official Madison County, IL parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.