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St. Lawrence County, New York property search

Search an address or an owner in St. Lawrence County, New York with the box at the top of the map, or tap a lot, for its owner, lines and acreage. 67,717 lots are mapped here, covering 1,826,146 acres. 7,343 of them are held by institutions rather than by individuals.

Farmers and landowners in St. Lawrence County received $3.2 million in federal farm program payments in 2025, paid to 126 recipients. 179,234 acres of agricultural land here are disclosed as foreign-held, the most by owners from Cayman Islands. Crop insurance paid $2.5 million in claims for the 2024 crop year.

67,717
Lots mapped
1,826,146
Acres
7,343
Institutional

Land use in St. Lawrence County

Parcels and acreage by land use in St. Lawrence County, New York
Land useParcelsAcres
21027,46261,453
3144,76314,014
2604,22171,781
2703,91326,401
2403,385198,775
3113,18111,187
3122,44542,460
9102,433355,322
3222,279100,457
1201,11983,897
1051,07669,665
3231,06036,983

Largest landowners in St. Lawrence County

Largest landowners by acreage in St. Lawrence County, New York
OwnerParcelsAcres
New York State Ref Adir Park135121,250
MWF Adirondacks, LLC102101,744
New York State Reforestation557100,926
New York State15020,772
S Timber, LLC5219,063
Kildare Club39,722
New York State Power Authority848,517
Woodwise Forestland, LLC28,041
Cranberry Renewable Timber LLC87,244
Greenwood Acres LLC736,633

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 New York

Federal farm payments in St. Lawrence County

$3.2M
Paid in 2025
126
Recipients
Federal farm program payments by program in St. Lawrence County, New York, 2025
ProgramPaid
Emergency Commodity Assistance Program$1.7M
Supplemental Disaster Relief Non-Spec Crops$577K
CFAPCARES$397K
CFAPCCCCA$353K
Dairy Margin Coverage$94K
Marketing Assistance for Specialty Crops$76K

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

Foreign-held farmland in St. Lawrence County

179,234
Acres disclosed
47
Holdings
Foreign-held agricultural land by country in St. Lawrence County, New York, 2024
CountryAcres
Cayman Islands103,726
Austria19,015
Germany18,833
Liechtenstein18,360
United Kingdom7,667
Switzerland4,774

Largest disclosed holders

Largest foreign holders of agricultural land in St. Lawrence County, New York
Holder (country)Acres
MWF Adirondacks, LLC (CAYMAN ISLANDS)103,726
S TIMBER, LLC (GERMANY)18,833
JT Granshue Timberland, LLC (AUSTRIA)18,595
CB Forest Limited (LIECHTENSTEIN)18,360
CLERICAL MEDICAL & FORESTRY LTD. (UNITED KINGDOM)6,879

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. Lawrence County

149
Policies
70,894
Insured acres
$2.5M
Claims paid
1.03
Loss ratio
Crop insurance claims by crop in St. Lawrence County, New York, 2024
CropClaims
Pasture,Rangeland,Forage$1.2M
Corn$1M
Apiculture$147K
Soybeans$96K
Oats$4K

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

Conservation and the power grid

85
CRP acres, 2025
111
Substations
1
345 kV and up
765 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. Lawrence County by address, free, or work out a lot's acreage.

Nearby counties in New York

  • Franklin County34,620
  • Jefferson County58,599
  • Lewis County24,688
  • Hamilton County12,947
  • Essex County35,943
  • Clinton County38,414
  • Herkimer County41,442
  • Oswego County59,567

All New York counties

This copy of St. Lawrence County's records was taken on August 12, 2026. Assessment records, not a survey.