LandBrief

St. Louis County

Parcel & Property Data

185,033Total Parcels
—Avg. Market Value
4,083,480Total Acres

About This Data

LandBrief holds 185,033 parcel records for St. Louis County, sourced from county records. Each includes the parcel boundary, and — where the county publishes them — owner, situs address, acreage, assessed values and legal description.

Data from the St. Louis County assessor roll dated August 2025, loaded August 2026. See data sources for every county’s vintage.

Explore St. Louis County

St. Louis County by the Numbers

Median parcel size
1.1 acres
measured from mapped boundaries
90th-percentile parcel
40.4 acres
County land area
3,998,797 acres
U.S. Census measurement
Communities
48
32.8% of parcels outside any incorporated place

Who Owns St. Louis County?

Share of the county’s 185,033 parcels by the kind of owner on record. Classified from owner names, so the boundaries are approximate; an entity the rules cannot place counts as an individual.

Owner typeShare of parcels
Individuals67.3%
Companies & organizations11.2%
Trusts & estates1.5%
Government16.0%
Other / unclassified4.0%

The largest owner on record is ST OF MN C278 L35 with 14,420 parcels — see the full landowner leaderboard.

Parcel Records (~185,033 total)

per page
Parcel IDOwnerAddressCityAcreage
668-0010-04860UNITED STATES OF AMERICA—Unincorporated804.60
668-0010-04660UNITED STATES OF AMERICA—Unincorporated778.96
668-0010-02860UNITED STATES OF AMERICA—Unincorporated776.39
240-0030-04880UNITED STATES OF AMERICA—Unincorporated772.24
643-0010-05450*STATE SCHOOL LAND—Unincorporated762.99
308-0040-00740UNITED STATES OF AMERICA—Unincorporated762.27
545-0010-00010UNKNOWN—Unincorporated757.90
668-0010-00970UNITED STATES OF AMERICA—Unincorporated751.63
717-0010-00010UNITED STATES OF AMERICA—Unincorporated746.03
667-0010-04960UNITED STATES OF AMERICA—Unincorporated742.69
Page 1 of 18504

Download St. Louis County parcel data

All 185,033 parcels in St. Louis County as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.

Get St. Louis County on FreeParcelData →

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Frequently Asked Questions

How many parcels are in St. Louis County?

The St. Louis County assessor roll on file records 185,033 parcels across 48 communities, with 32.8% lying outside any incorporated place.

Who owns the most land in St. Louis County?

ST OF MN C278 L35 holds 14,420 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.

What is the typical parcel size in St. Louis County?

Measured from mapped boundaries, the median parcel is 1.1 acres, and nine parcels in ten are under 40.4 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.

How much of St. Louis County is government-owned?

Government entities — federal, state, and local — hold 16.0% of the county’s parcels, classified from owner names on the roll.

How current is this data?

It comes from the St. Louis County assessor roll dated August 2025. Counties deliver on their own schedules; the methodology page explains how records are processed and the data sources page tracks every county’s vintage.

Browse by City (48)

185,033 parcels across 48 communities in St. Louis County.