Blog · October 14, 2026 · Illinois
Using the Highland Plat Map
Lots in Highland trace back to recorded plats filed with the county.
Main page: Madison County, IL GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Pierron says lot and block, look up the Highland plat map it refers to. What this Highland guide covers: where plats are filed, how a plat differs from a parcel map, and the details that matter to buyers.
Getting started with the Highland plat map
For land around Troy, the deed or parcel record often names the subdivision and plat reference; use it to request a copy.
Getting to the right map
Go first to the Madison County parcel viewer; it includes each tax parcel around St. Jacob and Pierron. In and around Grantfork, put in a street address, an owner's name or a parcel number, and the matching parcel lights up. If the land is near Pierron, the record panel normally shows the owner of record, acreage on the tax roll, the parcel number and often a sale date.
Highland, IL: the basics
Highland sits in Madison County, Illinois, and the county assessor maps its lots. On ground around Troy, city or town hall handles matters such as zoning, permits and utilities within town limits, while the county keeps the tax map. Acreage past the town limits toward Pierron usually follows county rules rather than the town's.
Madison County in a few facts
Edwardsville is the county seat, home to the main records offices. Other places on the map include Grantfork, Marine, Pierron, and St. Jacob, each with its own cluster of lots. Roughly 262,752 people call Madison County home (Census Bureau estimate, 2023) across some 716 square miles. Madison County dates to 1812, and some chains of title near St. Jacob are long. Features like Mississippi River and Horseshoe Lake are easy to spot when you zoom out from Pierron.
Land on the county line
Madison County meets Bond County, Clinton County, Jersey County, Macoupin County, and Montgomery County; every one of them runs a separate parcel map. Acreage along the edge near St. Jacob may show up across two assessors' files, so open the neighboring map as well. If the land is near Grantfork, our state page links each bordering county map for Illinois.
Which office to call
Questions about value or the owner field for land near Grantfork belong with the Supervisor of Assessments, working with township assessors, since that office keeps the assessment data. Zoning, permits and septic questions near Pierron need the planning or permitting office, and the answer depends on jurisdiction.
Reading the legal description
Illinois follows the Public Land Survey System, so rural legal descriptions near Grantfork cite section, township and range. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though real sections near Grantfork vary in size. Copy the legal description from the record for the parcel near Marine for any title or survey request.
Plat map vs. parcel map
When the two disagree for a lot near Grantfork, go with the plat and a surveyor's work.
What a plat shows
Easements on the plat near Alhambra limit where you can build or fence; read the notes on the sheet.
Land outside a subdivision
Rural land near St. Jacob that was never subdivided is often described by metes and bounds or survey description; look for a recorded survey for land near Grantfork.
Backing up the map with records
For anything that matters, get the recorded deed through the county Recorder of Deeds (in many counties the County Clerk and Recorder); the parcel map near Alhambra only summarizes it. Closer to Troy, bring the instrument number shown in the record panel so staff can find the deed fast.
A word on accuracy
Tax maps are drawn for assessment, not surveyed, so a fence near Troy can sit a few yards off the line on screen. For acreage around Alhambra, records update in batches, so a deed recorded last month might lag behind.
Online indexes and office visits
Near Grantfork, some counties put plat images online, while others require a visit or a request; copy fees are usually small.
Field tips
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Alhambra, though signal can drop in rural spots. A screenshot of the parcel near Pierron with its ID keeps working without signal.
When a plat changes
An amended plat may change lots around Troy, search the index for replats of the same subdivision; vacated streets or alleys also get recorded.
Frequently asked
What does lot 7, block 3 mean near Troy?
Near Grantfork, lot and block refer to a numbered lot within a block on a recorded subdivision plat; the deed names the subdivision.
Is the Highland plat map the same as the county GIS?
It depends, but the plat near Alhambra is recorded, while the GIS layer is an approximation; a surveyor ties it to the ground.
What do the dashed lines on a plat mean for land near Troy?
For a parcel near Marine, dashed lines often mark easements or building lines; read the plat notes.
Where can I find the Highland plat map?
Good question; recorded plats near Pierron are filed with the county Recorder of Deeds (in many counties the County Clerk and Recorder); use the plat reference from the deed or parcel record.
Is the parcel map a survey for land near Marine?
No; boundary questions near Pierron 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.