Blog · October 14, 2026 · Missouri
The Clayton GIS Map and the county parcel viewer
Parcel data for this town comes from the county, and the viewer is free, at least around Bellerive Acres.
Main page: St. Louis County, MO GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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For a parcel in or near Clayton, the Clayton GIS map shows parcel boundaries plus basic tax data. In this Clayton guide: where that map lives, how to search it, and the limits worth knowing.
Opening the Clayton GIS map: start here
In and around Maplewood, 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 St. Louis County ArcGIS parcel map; it includes every assessed parcel from Brentwood to Hanley Hills. For a home near Richmond Heights, type a street address, an owner's name or a parcel number, and the viewer zooms to the match. In and around Pagedale, the record panel normally shows the owner of record, acreage on the tax roll, a parcel ID and often a sale date.
When the map won't load
When the map won't open around Maplewood, switch browsers or turn off pop-up blockers; the Platbookmapper county page tracks the current link.
Field tips
Most viewers work in a phone browser, handy when you're parked on a road near Maplewood, so load it before you lose signal. A saved image of the lot near Hanley Hills and its lines helps when you meet an owner or agent.
Saving what you find
Print or screenshot the parcel near Richmond Heights with its ID visible, which helps later when you ask the assessor or a title company.
Clayton, MO: the basics
Clayton sits in St. Louis County, Missouri, which means parcel data comes from the county. Clayton is also the county seat, which puts the Recorder of Deeds close by. On ground around Pagedale, the municipality handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Lots just outside the town limits toward Hanley Hills generally falls under county rules instead.
Three ways to find a parcel
By address works best for lots in Clayton; owner search often wants the surname first. For a home near Pagedale, searching by parcel number never misses, and it's printed on tax bills.
Sections, lots and bearings
Missouri follows the Public Land Survey System, so deeds around Richmond Heights reference sections and townships. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though real sections near Maplewood vary in size. Write down the legal description for the tract near Pagedale when you talk to a surveyor.
Backing up the map with records
Before you sign anything, pull the recorded deed through the Recorder of Deeds; the parcel map near Richmond Heights only summarizes it. Older tracts around Maplewood can trace back through many deeds, so a title company is worth hiring if money is changing hands.
What the layers show
For property near Wellston, look in the layer list for municipal boundaries, floodplain and sometimes zoning; not every viewer has them all.
Neighboring parcel maps
St. Louis County touches Madison County, IL, Monroe County, IL, St. Clair County, IL, Franklin County, and Jefferson County, all with their own assessor records. A tract near the line by Maplewood can show up across two assessors' files, so open the neighboring map as well. For property near Richmond Heights, the Platbookmapper state page links every bordering county map for Missouri.
Getting your bearings
Clayton holds the county offices, where most land records are kept. Other places on the map include Richmond Heights, Brentwood, Maplewood, and Pagedale, each with its own cluster of lots. Roughly 987,059 people live in St. Louis County (Census Bureau estimate, 2023) spread over about 508 square miles. St. Louis County dates to 1812, and some chains of title near Hanley Hills are long. Places such as Spanish Lake Park and Babler State Park make handy reference points on the map near Hanley Hills.
A word on accuracy
The acreage figure is an estimate; only a licensed surveyor establishes the real lines on land around Pagedale. For land near Brentwood, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Which office to call
For assessment questions about property around Richmond Heights belong with the County Assessor, the office behind the parcel record. Building or septic questions for a lot near Pagedale need the planning or permitting office, and the answer depends on jurisdiction.
Owner, value and acreage
Recent sales on nearby lots around Maplewood give a rough idea of values; they're not an appraisal.
Quick answers
Does the Clayton parcel viewer cost anything?
Generally, the St. Louis County ArcGIS parcel map is free and opens without a login; some sites ask you to accept a disclaimer.
How current is the parcel data around Ballwin?
In most cases, owner data near Richmond Heights can lag new deeds by weeks.
How accurate is the parcel map near Hanley Hills?
It depends, but lines near Richmond Heights can be off by several feet or more; get a survey before a fence.
Can I search by owner name in Clayton?
Click the lot near Maplewood to see the owner.
Where do I ask about an assessment near Maplewood?
Values are the County Assessor's job; recorded documents belong to the Recorder of Deeds; planning offices cover zoning near Brentwood
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.