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St. Louis County, Missouri property search

Search an address or an owner in St. Louis County, Missouri with the box at the top of the map, or tap a lot, for its owner, lines and acreage. 401,425 lots are mapped here, covering 230,221 acres. 56,744 of them are held by institutions rather than by individuals.

Farmers and landowners in St. Louis County received $479,000 in federal farm program payments in 2025, paid to 51 recipients. 677 acres of agricultural land here are disclosed as foreign-held, the most by owners from Netherlands. Crop insurance paid $373,000 in claims for the 2024 crop year.

401,425
Lots mapped
230,221
Acres
56,744
Institutional

Land use in St. Louis County

Parcels and acreage by land use in St. Louis County, Missouri
Land useParcelsAcres
R381,391112,838
C17,42064,871
A86128,972
X6567,316
W50911,618
Y983,070
Z201,536

Largest landowners in St. Louis County

Largest landowners by acreage in St. Louis County, Missouri
OwnerParcelsAcres
ST LOUIS COUNTY43011,042
STATE OF MISSOURI1405,287
ST LOUIS CITY OF5383,730
ST LOUIS COUNTY MISSOURI1451,254
METROPOLITAN ST LOUIS SEWER DISTRICT71805
WINTER BROTHERS MATERIAL COMPANY16759
UNION ELECTRIC COMPANY250696
CHESTERFIELD CITY OF53655
FLORISSANT CITY OF53573
EUREKA CITY OF62572

Companies, trusts and public agencies, ranked by acres held under the name on the assessor's file. Private individuals are not ranked. Largest landowners in Missouri

Federal farm payments in St. Louis County

$479K
Paid in 2025
51
Recipients
Federal farm program payments by program in St. Louis County, Missouri, 2025
ProgramPaid
Emergency Commodity Assistance Program$264K
Marketing Assistance for Specialty Crops$130K
Agricultural Risk Coverage Program - County$55K
Supplemental Disaster Relief Non-Spec Crops$26K
Agricultural Risk Coverage - Individual$4K

USDA Farm Service Agency payment files, 2025. Compare farm subsidies by county

Foreign-held farmland in St. Louis County

677
Acres disclosed
6
Holdings
Foreign-held agricultural land by country in St. Louis County, Missouri, 2024
CountryAcres
Netherlands522
Thailand113
United Kingdom42

Largest disclosed holders

Largest foreign holders of agricultural land in St. Louis County, Missouri
Holder (country)Acres
SHELL OIL CO. (NETHERLANDS)522
SHELL PIPE LINE CORP. (UNITED KINGDOM)42

USDA Agricultural Foreign Investment Disclosure Act filings, holdings at the end of 2024. Only disclosed interests are counted. See foreign-owned farmland by county

Crop insurance in St. Louis County

96
Policies
9,999
Insured acres
$373K
Claims paid
0.63
Loss ratio
Crop insurance claims by crop in St. Louis County, Missouri, 2024
CropClaims
Soybeans$302K
Corn$52K
Wheat$19K

USDA Risk Management Agency Summary of Business, 2024 crop year.

Conservation and the power grid

75
Substations
2
345 kV and up
345 kV
Highest voltage

Conservation Reserve Program acres under contract (USDA FSA). Substations in service, from a public copy of the federal HIFLD layer.

Find out who owns a property in St. Louis County by address, free, or work out a lot's acreage.

Nearby counties in Missouri

  • St. Charles County165,548
  • St. Louis city134,342
  • Jefferson County106,532
  • Franklin County71,918
  • Lincoln County33,084
  • Warren County27,215
  • Ste. Genevieve County3,612
  • Washington County26,757

All Missouri counties

This copy of St. Louis County's records was taken on August 11, 2026. Assessment records, not a survey.