Download Montgomery County, Maryland GIS parcel data - 353,004 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: MCAtlas LOAD_DATE (Date Of Parcels Download); last loaded into LandAI on 2026-05-22.
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 353,004 active parcels (MCAtlas LOAD_DATE (Date Of Parcels Download); last loaded into LandAI on 2026-05-22):
| Field | Coverage |
|---|---|
| Owner names | 99.5% |
| Site addresses | 99.5% |
| Owner mailing addresses | 99.5% |
| Deeded acres | 5.3% |
| Calculated (GIS) acres | 100% |
| Land use | 99.9% |
| Last sale price | 99.5% |
| Sale / transfer date | 92.7% |
| Market total value | 99.5% |
| Year built | 99.9% |
| Building square footage | 99.5% |
| Legal description | 99.9% |
These are 12 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.
Montgomery County, Maryland has 353,004 active parcels in the LandAI dataset (source data as of 2026-05-21).
Every parcel includes the standardized LandAI schema: parcel ID and geometry plus owner names (99.5%), site addresses (99.5%), owner mailing addresses (99.5%), deeded acres (5.3%), calculated (GIS) acres (100%), land use (99.9%), last sale price (99.5%), sale / transfer date (92.7%), 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.
MCAtlas LOAD_DATE (Date Of Parcels Download); last loaded into LandAI on 2026-05-22.
Yes - 99.5% of Montgomery County parcels include a normalized owner name, along with owner mailing addresses where the county provides them.
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