Blog · October 14, 2026 · Illinois
Using the Naperville Plat Map
A recorded plat shows how land near Woodridge was divided into lots.
Main page: Will County, IL GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Woodridge says lot and block, the Naperville plat map is where those numbers come from. Covered here for Naperville: where to request a copy, plat versus tax map, and what to look for on the sheet.
Getting started with the Naperville plat map
For a lot in Naperville, the deed or parcel record often names the subdivision and plat reference; that makes the request quick.
Opening the official parcel viewer
Your first stop is the Will County parcel viewer; it maps every assessed parcel around Lemont and Bolingbrook. On ground around Crest Hill, put in a street address, an owner's name or a parcel number, and the matching parcel lights up. Out toward Crest Hill, write down the parcel ID while you have it open; each clerk in the county asks for it first.
Limits of the parcel data
The acreage figure is a tax-roll number; only a licensed surveyor establishes the real lines on land around Woodridge. Out toward Woodridge, records update in batches, so a deed recorded last month can take weeks to appear.
Offices that can help
Deeds, mortgages and recorded plats for land near Woodridge sit in the index kept by the county Recorder of Deeds (in many counties the County Clerk and Recorder), usually searchable by name or document number. Building or septic questions for a lot near Lemont need the planning or permitting office, town or county, depending on location.
The paper trail behind a parcel
The map is an index, not the title: deeds, plats and easements covering ground around Romeoville sit with the county Recorder of Deeds (in many counties the County Clerk and Recorder). Inherited tracts near Romeoville can sit on many deeds, so a title company earns its fee if money is changing hands.
When there's no plat
Rural land near Romeoville that was never subdivided is often described by metes and bounds or survey description; the deed and any recorded survey describe it instead.
Neighboring parcel maps
Will County meets Cook County, DuPage County, Grundy County, Kankakee County, and Kendall County, and each of those keeps its own parcel map. A tract near the line by Woodridge can show up in two county records, so open the neighboring map as well. If you're looking near Lockport, our state page lists every bordering county map across Illinois.
Field tips
Most viewers work in a phone browser, which helps when you're standing on land near Crest Hill, but coverage can be spotty out of town. A printout of the tract near Lemont helps when you meet an owner or agent.
Naperville and the county around it
Naperville sits in Will County, Illinois, and the county assessor maps its lots. With a lot near Lemont, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, while the county keeps the tax map. Lots just outside the town limits toward Romeoville generally follows county rules rather than the town's.
Two different maps
Where lines don't match in Naperville, trust the recorded documents over the GIS layer.
Details on the Naperville plat map
On ground around Bolingbrook, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
Getting a copy
With a lot near Lockport, some counties put plat images online, while others require a visit or a request; small fees are common.
Getting your bearings
Joliet holds the county offices, which is where the courthouse records live. Smaller places on the map include Bolingbrook, Woodridge, Romeoville, and Lemont, each with its own cluster of lots. About 700,728 people call Will County home (Census estimate, 2023) spread over about 836 square miles. Will County was formed in 1836, and some chains of title near Romeoville are long. Places such as Channahon State Park are easy to spot when you zoom out from Bolingbrook.
When a plat changes
An amended plat may change lots around Lockport, search the index for replats of the same subdivision; vacated streets or alleys also get recorded.
Legal descriptions in Illinois
Illinois is laid out under the Public Land Survey System, so deeds around Lockport reference sections and townships. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though real sections near Romeoville vary in size. Write down the legal description for the tract near Romeoville for any title or survey request.
Frequently asked
Who has recorded plats for land near Lockport?
Generally, recorded plats near Lemont are filed with the county Recorder of Deeds (in many counties the County Clerk and Recorder).
How do I read lot and block in Naperville?
For acreage around Bolingbrook, lot and block refer to a numbered lot within a block on a recorded subdivision plat, so pull that plat for dimensions.
Is a plat map a survey for land near Bolingbrook?
Near Lockport, a recorded plat is based on a survey, but the GIS map is not; trust the plat when they differ.
Are old plats online for land near Lemont?
Good question; the county Recorder of Deeds (in many counties the County Clerk and Recorder) can say what's available.
How do I save a parcel from the viewer near Crest Hill?
Most viewers have a print or export tool; include the record panel for the lot near Bolingbrook.
Open the official Will 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.