The Pima County Geospatial Data Portal provides free and open access to authoritative GIS data for Tucson, South Tucson, Oro Valley, Marana, Sahuarita, Ajo, Green Valley, and all areas within Pima County. Developed and maintained by Pima County Geographic Information Systems (GIS), the portal connects residents, researchers, developers, and public agencies to the spatial data they need to support analysis, planning, mapping, and decision‑making.
The portal is part of Pima County’s commitment to transparency, open data, and accessible geospatial information for the community.
The portal allows users to search, view, sync, and download a wide range of datasets, including layers related to transportation, parcels, land use, political boundaries, demographics, environmental resources, public safety, flood control, and more. Featured maps and applications highlight frequently requested data and help users quickly locate relevant information and services.
Python-based automation workflows update all data on a daily schedule by harvesting current authoritative datasets from internal County systems and publishing them to ArcGIS Online. Due to technical limitations in automated publishing, items will not display an updated “Data Updated” timestamp, even though the underlying features reflect the most current data available.
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The portal is part of Pima County’s commitment to transparency, open data, and accessible geospatial information for the community.
The portal allows users to search, view, sync, and download a wide range of datasets, including layers related to transportation, parcels, land use, political boundaries, demographics, environmental resources, public safety, flood control, and more. Featured maps and applications highlight frequently requested data and help users quickly locate relevant information and services.
Python-based automation workflows update all data on a daily schedule by harvesting current authoritative datasets from internal County systems and publishing them to ArcGIS Online. Due to technical limitations in automated publishing, items will not display an updated “Data Updated” timestamp, even though the underlying features reflect the most current data available.
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