Blog · October 14, 2026 · Illinois
Mattoon GIS Map: looking up parcels
Parcel data for Mattoon comes from the county, and the viewer is free.
Main page: Coles County, IL GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Looking for lot lines and acreage around Lerna? Pulling up the Mattoon GIS map gets you there fast, and it's free to use. This Mattoon guide covers: which viewer to open, the fastest ways to search, and the limits worth knowing.
Finding a lot on the Mattoon GIS map
Closer to Oakland, some cities also run their own GIS portal for utilities or zoning; that can add detail on top of the county map.
Getting to the right map
Go first to the Coles County ArcGIS parcel map; it maps each tax parcel in the county, Ashmore included. Near Lerna, put in a street address, an owner's name or a parcel number, and the matching parcel lights up. On ground around Charleston, the parcel card usually lists the owner of record, acreage on the tax roll, the parcel number and in many cases the last transfer.
Coles County in a few facts
Charleston is the county seat, where most land records are kept. You'll also find Lerna, Humboldt, and Ashmore, where town lots give way to larger tracts. About 46,060 people live in Coles County (Census estimate, 2023) spread over roughly 508 square miles. Coles County dates to 1830, and some chains of title near Charleston are long.
Mattoon and the county around it
Mattoon lies within Coles County, Illinois, which means parcel data comes from the county. Near Humboldt, city or town hall handles matters such as zoning, permits and utilities within town limits, while the county keeps the tax map. Lots just outside the town limits toward Ashmore usually answers to county rules instead.
Land on the county line
Coles County borders Clark County, Cumberland County, Douglas County, Edgar County, and Moultrie County, all with their own assessor records. Acreage along the edge near Ashmore can show up across two assessors' files, so look at the adjacent map too. For property near Lerna, the Platbookmapper state page lists each bordering county map for Illinois.
Three ways to find a parcel
Acreage around Ashmore might not have a street number, which means panning to it and clicking. For a home near Oakland, searching by parcel number never misses, and you'll find it on tax statements.
Using it on a phone
Most viewers work in a phone browser, useful out on a road near Lerna, but coverage can be spotty out of town. A saved image of the lot near Humboldt and its lines helps when you meet an owner or agent.
Printing and saving
Print or screenshot the parcel near Ashmore with its ID visible, so you have it when calling an office.
Beyond the parcel lines
For a parcel near Lerna, look in the layer list for municipal boundaries, floodplain and sometimes zoning; not every viewer has them all.
Where the recorded documents are
The map is an index, not the title: recorded deeds, subdivision plats and easements covering ground around Humboldt sit with the county Recorder of Deeds (in many counties the County Clerk and Recorder). Long-held tracts near Ashmore may sit on many deeds, so a title company can sort it out before a purchase.
Who handles what
If the acreage or value on a parcel near Oakland looks off belong with the Supervisor of Assessments, working with township assessors, the office behind the parcel record. Questions about what you can build around Humboldt need the planning or permitting office, and the answer depends on jurisdiction.
How land is described here
Illinois uses the Public Land Survey System, so rural legal descriptions near Ashmore cite section, township and range. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though sections near Lerna can be irregular. Write down the legal description for the tract near Humboldt for any title or survey request.
What the map can't tell you
Tax maps are drawn for assessment, not surveyed, so a fence near Oakland may sit a few yards off the line on screen. With a lot near Ashmore, records update in batches, so a deed recorded last month can take weeks to appear.
Reading a parcel record
Recent sales on nearby lots near Oakland give a rough idea of values; an appraiser is the real authority.
When the map won't load
When the map won't open around Lerna, switch browsers or turn off pop-up blockers; links occasionally change, and our directory page keeps the current one.
Frequently asked
Can I look up a property owner on the map near Lerna?
Generally, the parcel record for a lot near Ashmore lists the owner of record, or search by address instead.
What layers does the parcel viewer have near Ashmore?
Closer to Charleston, many viewers offer aerial imagery plus layers like city limits, zoning or flood zones; open the layer list to see what's there.
Why does a recent sale near Lerna not show?
Good question; owner data near Lerna can lag new deeds by weeks, so check the deed index.
How accurate is the parcel map near Charleston?
Generally, lines near Ashmore can be off by several feet or more; get a survey before a fence.
Is the parcel map a survey for land near Ashmore?
The map near Ashmore is approximate.
Open the official Coles 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.