Dubuque County, IA GIS parcel data download

Download Dubuque County, Iowa GIS parcel data - 52,938 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: TaxYear field in Dubuque County parcel source: 2025; last loaded into LandAI on 2026-06-08.

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 Dubuque County dataset

Field completeness measured across 52,938 active parcels (TaxYear field in Dubuque County parcel source: 2025; last loaded into LandAI on 2026-06-08):

FieldCoverage
Owner names100%
Site addresses77.3%
Owner mailing addresses99.8%
Deeded acres23.0%
Calculated (GIS) acres100%
Land use100%
Sale / transfer date98.5%
Market total value98.9%
Legal description100%

These are 9 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.

Dubuque County parcel data FAQ

How many parcels are in Dubuque County, IA?

Dubuque County, Iowa has 52,938 active parcels in the LandAI dataset (source data as of 2025).

What fields are included in Dubuque County parcel data?

Every parcel includes the standardized LandAI schema: parcel ID and geometry plus owner names (100%), site addresses (77.3%), owner mailing addresses (99.8%), deeded acres (23.0%), calculated (GIS) acres (100%), land use (100%), sale / transfer date (98.5%), market total value (98.9%), and more.

What formats can I download Dubuque 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 Dubuque County parcel data?

TaxYear field in Dubuque County parcel source: 2025; last loaded into LandAI on 2026-06-08.

Does Dubuque County parcel data include owner names?

Yes - 100% of Dubuque County parcels include a normalized owner name, along with owner mailing addresses where the county provides them.

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