Allegany County, MD GIS parcel data download

Download Allegany County, Maryland GIS parcel data - 41,402 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: SDATDATE (Date of the Assessments Data 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.

What's in the Allegany County dataset

Field completeness measured across 41,402 active parcels (SDATDATE (Date of the Assessments Data Download); last loaded into LandAI on 2026-05-22):

FieldCoverage
Owner names94.1%
Site addresses94.3%
Owner mailing addresses94.1%
Deeded acres94.2%
Calculated (GIS) acres100%
Land use94.3%
Last sale price94.2%
Sale / transfer date86.7%
Market total value94.2%
Year built66.4%
Building square footage94.1%
Legal description94.3%

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.

Allegany County parcel data FAQ

How many parcels are in Allegany County, MD?

Allegany County, Maryland has 41,402 active parcels in the LandAI dataset (source data as of 2026-02).

What fields are included in Allegany County parcel data?

Every parcel includes the standardized LandAI schema: parcel ID and geometry plus owner names (94.1%), site addresses (94.3%), owner mailing addresses (94.1%), deeded acres (94.2%), calculated (GIS) acres (100%), land use (94.3%), last sale price (94.2%), sale / transfer date (86.7%), and more.

What formats can I download Allegany County GIS parcel data in?

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.

How current is the Allegany County parcel data?

SDATDATE (Date of the Assessments Data Download); last loaded into LandAI on 2026-05-22.

Does Allegany County parcel data include owner names?

Yes - 94.1% of Allegany County parcels include a normalized owner name, along with owner mailing addresses where the county provides them.

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