Download Jefferson County, New York GIS parcel data - 57,578 parcels with owner names, site & mailing addresses, acreage, land use, and sale values. Instant delivery in Shapefile, FileGDB, GeoPackage, GeoJSON & CSV. $100 per county.
Data freshness: DANC Parcel_Model Jefferson rows IMPORT_DATE=2025-05-06; official City of Watertown Public_Parcels layer merged for SWIS 221800; public NYS ITS/ORPTS 2025 centroid roll used as fallback enrichment; last loaded into LandAI on 2026-05-19.
Every purchase includes all five export formats (Shapefile, FileGDB, GeoPackage, GeoJSON & CSV), standardized to the LandAI parcel schema with WGS84 (EPSG:4326) geometry. After checkout you choose which formats to generate and download them for 45 days.
Field completeness measured across 57,578 active parcels (DANC Parcel_Model Jefferson rows IMPORT_DATE=2025-05-06; official City of Watertown Public_Parcels layer merged for SWIS 221800; public NYS ITS/ORPTS 2025 centroid roll used as fallback enrichment; last loaded into LandAI on 2026-05-19):
| Field | Coverage |
|---|---|
| Owner names | 100% |
| Site addresses | 100% |
| Owner mailing addresses | 99.5% |
| Deeded acres | 100% |
| Calculated (GIS) acres | 100% |
| Land use | 5.7% |
| Assessed total value | 100% |
| Market total value | 99.7% |
| Year built | 68.2% |
| Building square footage | 63.2% |
These are 10 of the 48 standardized fields in the LandAI parcel schema. Live per-field completeness for every field is shown on this page's interactive view.
Jefferson County, New York has 57,578 active parcels in the LandAI dataset (source data as of 2025/05/06).
Every parcel includes the standardized LandAI schema: parcel ID and geometry plus owner names (100%), site addresses (100%), owner mailing addresses (99.5%), deeded acres (100%), calculated (GIS) acres (100%), land use (5.7%), assessed total value (100%), market total value (99.7%), and more.
Shapefile, FileGDB, GeoPackage, GeoJSON & CSV. Every $100 county purchase includes all five formats; you choose which to generate after checkout and can re-download for 45 days.
DANC Parcel_Model Jefferson rows IMPORT_DATE=2025-05-06; official City of Watertown Public_Parcels layer merged for SWIS 221800; public NYS ITS/ORPTS 2025 centroid roll used as fallback enrichment; last loaded into LandAI on 2026-05-19.
Yes - 100% of Jefferson County parcels include a normalized owner name, along with owner mailing addresses where the county provides them.
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