Blog · October 14, 2026 · Missouri
Reading the Ellisville Plat Map for a lot
Lots in Ellisville trace back to recorded plats filed with the county.
Main page: St. Louis County, MO GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Manchester says lot and block, the Ellisville plat map is where those numbers come from. This Ellisville guide covers: where to request a copy, plat versus tax map, and the details that matter to buyers.
The Ellisville plat map: start here
For a lot in Ellisville, the deed usually cites the plat; that makes the request quick.
Opening the official parcel viewer
Your first stop is the St. Louis County ArcGIS parcel map; it covers every tax parcel around Wildwood and Manchester. In and around Wildwood, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. Out toward Wildwood, write down the parcel ID from that panel; each office in the county will want it.
Deeds, plats and who keeps them
The map is an index, not the title: recorded deeds, subdivision plats and easements for land near Ballwin are filed with the Recorder of Deeds. For a parcel near Wildwood, have ready the document number shown in the record panel so staff can find the deed fast.
Getting your bearings
Clayton serves as the county seat, which is where the courthouse records live. You'll also find Ballwin, Clarkson Valley, Winchester, and Wildwood, each with its own cluster of lots. Roughly 987,059 people call St. Louis County home (Census estimate, 2023) on roughly 508 square miles. St. Louis County was organized in 1812, which matters when you trace an old farm's title. Landmarks such as Spanish Lake Park and Babler State Park make handy reference points on the map near Chesterfield.
Using it on a phone
Most viewers work in a phone browser, which helps when you're standing on land near Chesterfield, though signal can drop in rural spots. A printout of the tract near Chesterfield is a good backup.
Who handles what
If the acreage or value on a parcel near Clarkson Valley looks off belong with the County Assessor, the office behind the parcel record. Building or septic questions for a lot near Chesterfield need the planning or permitting office, depending on whether the land is inside town limits.
A word on accuracy
Parcel lines are drawn for taxes, not surveyed, so a tree line near Chesterfield may sit a few yards off the line on screen. Records update in batches, so a recent sale near Manchester may not show yet.
When there's no plat
Rural land near Manchester that was never subdivided is often described by metes and bounds or survey description; look for a recorded survey for land near Wildwood.
Where Ellisville fits in
Ellisville sits in St. Louis County, Missouri, and the county assessor maps its lots. For acreage around Clarkson Valley, city or town hall handles things like zoning, permits and utilities within town limits, while the county keeps the tax map. Acreage past the town limits toward Ballwin usually falls under county rules, not municipal ones.
Neighboring parcel maps
St. Louis County meets Madison County, IL, Monroe County, IL, St. Clair County, IL, Franklin County, and Jefferson County, all with their own assessor records. Acreage along the edge near Ballwin may be split in two county records, so open the neighboring map too. For acreage around Ballwin, our state page links every neighboring county map across Missouri.
Recorded plat or GIS layer
If the tax map and plat differ near Clarkson Valley, go with the plat and a surveyor's work.
Reading the legal description
Missouri is laid out under the Public Land Survey System, which means a tract near Wildwood is described by section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though real sections near Chesterfield vary in size. Keep the legal description for land near Clarkson Valley for any title or survey request.
Amended plats
Lots near Winchester can be combined or reconfigured by a replat, so check for later filings; vacated streets or alleys also get recorded.
What a plat shows
Recorded easements around Clarkson Valley can block a shed or pool; read the notes on the sheet.
Requesting the plat
Near Clarkson Valley, many recorder offices offer an online index, otherwise call or visit with the reference; copy fees are usually small.
Ellisville: common questions
How do I read lot and block in Ellisville?
If the land is near Manchester, 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 Manchester?
Out toward Clarkson Valley, a recorded plat is based on a survey, but the GIS map is not.
How do I get a copy of a plat in Ellisville?
Recorded plats near Clarkson Valley are filed with the Recorder of Deeds; small copy fees are common.
Are old plats online near Manchester?
Out toward Clarkson Valley, it varies; some offices have scanned older plats and some haven't; call before you visit.
Can I download parcel lines near Winchester?
Some viewers offer PDF export; include the record panel for the lot near Wildwood.
Open the official St. Louis County, MO 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.