Blog · October 14, 2026 · Illinois
Using the Marion Plat Map
A recorded plat shows how land near Spillertown was divided into lots.
Main page: Williamson County, IL GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Crainville says lot and block, the Marion plat map is where those numbers come from. Covered here for Marion: where to request a copy, plat versus tax map, and what to look for on the sheet.
Tracking down the Marion plat map
For a lot in Marion, the deed usually cites the plat; that makes the request quick.
Getting to the right map
Your first stop is the Williamson County Beacon site; it covers each tax parcel in the county, Crainville included. If you're looking near Crainville, enter a street address, an owner's name or a parcel number, and the viewer zooms to the match. For a home near Crainville, the record panel usually lists the owner of record, assessed acreage, a parcel ID and in many cases the last transfer.
Deeds, plats and who keeps them
The map is an index, not the title: deeds, subdivision plats and easements for land near Spillertown sit with the county Recorder of Deeds (in many counties the County Clerk and Recorder). If the land is near Herrin, have ready the document number listed on the parcel record to skip a name search.
City limits and county records
Marion sits in Williamson County, Illinois, so its parcels are on the county's map. Marion is also the county seat, so deeds and plats are filed in town. Closer to Johnston City, City or town hall handles things like zoning, permits and utilities within town limits, while the county keeps the tax map. Lots just outside the city limits out by Spillertown usually follows county rules instead.
Land outside a subdivision
Rural land near Energy that was never subdivided may have no plat at all; look for a recorded survey for land near Crainville.
On site with the map
The parcel map usually runs in a mobile browser, useful out on a road near Crainville, but coverage can be spotty out of town. A printout of the tract near Crainville helps when you meet an owner or agent.
A word on accuracy
Acreage on the record is an estimate; only a licensed surveyor establishes the real boundary on land around Spillertown. If the land is near Crainville, records update in batches, so a deed recorded last month can take weeks to appear.
Two different maps
The Williamson County Beacon site draws parcels for taxes, but the recorded plat is what the deed relies on.
When a parcel crosses a boundary
Williamson County borders Franklin County, Jackson County, Johnson County, Pope County, and Saline County; every one of them runs a separate parcel map. A tract near the line by Herrin can show up across two assessors' files, so look at the neighboring map as well. If the land is near Crainville, our state page links each neighboring county map across Illinois.
Amended plats
An amended plat may change lots around Spillertown, so check for later filings; street vacations near Johnston City show up in the records too.
How land is described here
Illinois is laid out under the Public Land Survey System, so deeds around Crainville reference sections and townships. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though real sections near Crainville vary in size. Keep the legal description for land near Crainville when you talk to a surveyor.
A quick look at the area
Marion is the county seat, home to the main records offices. Smaller places on the map include Spillertown, Energy, Pittsburg, and Johnston City, where town lots give way to larger tracts. Roughly 66,706 people call Williamson County home (Census estimate, 2023) on roughly 420 square miles. Williamson County dates to 1839, so old deeds can run back a long way. Landmarks such as Crab Orchard National Wildlife Refuge make handy reference points on the map near Spillertown.
Getting answers from the right desk
Recorded documents for a parcel near Spillertown sit in the index kept by the county Recorder of Deeds (in many counties the County Clerk and Recorder), sometimes only in person. Questions about what you can build around Herrin go to planning, building or health offices, and the answer depends on jurisdiction.
Lots, blocks and easements
For property near Herrin, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
Ordering the Marion plat map
On ground around Pittsburg, many recorder offices offer an online index, while others require a visit or a request; copy fees are usually small.
Quick answers
Do easements show on the plat near Spillertown?
If you're looking near Spillertown, dashed lines often mark easements or building lines, so check before you build.
What is a lot and block description near Crainville?
If you're looking near Pittsburg, lot and block refer to a numbered lot within a block on a recorded subdivision plat.
Who has recorded plats for land near Crainville?
In most cases, recorded plats near Herrin are filed with the county Recorder of Deeds (in many counties the County Clerk and Recorder).
Are old plats online for land near Crainville?
For most people, older plats near Pittsburg may be on film or paper; call before you visit.
What's a legal description in Marion?
If the land is near Johnston City, Deeds use lot and block, metes and bounds or survey descriptions; copy it for any survey or title request.
Open the official Williamson 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.