Global Administrative Unit Layers (GAUL) Level 1 - Demo Stack Updated

The administrative boundaries dataset at level 1 (Sub-national level) is part of the Global Administrative Unit Layers (GAUL 2024) dataset series which includes information on administrative units for all the countries in the world, providing a contribution to the standardization of the spatial dataset representing administrative units. The administrative boundaries at the level 1 dataset distinguishes States, Provinces, Departments and equivalent. The GAUL maintains global layers with a unified coding system at country, first (e.g. departments), and second administrative levels (e.g. districts). The complete metadata reference for each country, along with the specific license or Terms of Use applicable at the country level, can be accessed **here**. **Data publication:** 2024-12-19 **Citation:** FAO. 2024. Global Administrative Unit Layers (GAUL). [Accessed on [DD Month YYYY]]. https://data.apps.fao.org/?lang=en. Licence: CC-BY-4.0 **Contact points:** Resource Contact: [FAO-Data](mailto:FAO-Data@fao.org) Metadata Contact: [FAO-Data](mailto:FAO-Data@fao.org) **Data lineage:** The overall GAUL methodology consists in a) collecting the best available data from most reliable sources, b) assemble national datasets into a common dataset by matching international boundaries with a reference authoritative dataset, i.e. the UN 2018, c) standardizing attributes to a common table of attributes, d) generating codes using GAUL Coding System, e) applying a topology and f) fill the metadata for each country. Detailed technical documentation is available **here**. **Resource constraints:** This work is made available under the Creative Commons Attribution-4.0 International license (**CC BY 4.0**). IMPORTANT – Read carefully the **Terms of Use** before using the digital data. By downloading the Global Administrative Unit Layers (GAUL) 2024 you agree to be bound by the terms and conditions contained in this document. **Online resources:** Download the data from the Google bucket GAUL 2024 Terms of Use GAUL 2024 L1 Metadata GAUL 2024 L1 ChangeLog GAUL L0 Codes 2024 - 2014 GAUL 2024 Technical Guidelines

The administrative boundaries dataset at level 1 (Sub-national level) is part of the Global Administrative Unit Layers (GAUL 2025) dataset series which includes information on administrative units for all the countries in the world, providing a contribution to the standardization of the spatial dataset representing administrative units. The administrative boundaries at the level 1 dataset distinguishes States, Provinces, Departments and equivalent. The GAUL maintains global layers with a unified coding system at country, first (e.g. departments), and second administrative levels (e.g. districts). The complete metadata reference for each country, along with the specific license or Terms of Use applicable at the country level, can be accessed **here**. **Data publication:** 2026-05-20 **Supplemental Information:** GAUL 2025 underwent a thorough review of administrative boundaries. Sources and point of contacts were cross-checked, and original references were verified. This process resulted in several updates, which are described in detail in the [**changeLog**]( https://data.apps.fao.org/catalog/dataset/0309530a-fc32-4115-8f68-0dffcdbaca15/resource/e02f4beb-6576-4d9f-a936-f17e5d3e5272/download/gaul_2025_l1_changelog.docx). As part of this revision, some codes were deprecated and new codes were assigned. The list of deprecated codes is available [**here**]( https://data.apps.fao.org/catalog/dataset/0309530a-fc32-4115-8f68-0dffcdbaca15/resource/9a270895-ae2f-404d-89fe-526e0eff9aa6/download/gaul_2025_l1_list_of_deprecated_codes.xlsx), while the list of new codes is available **here**. As explained in the technical documentation, changes in polygon geometry trigger the assignment of new codes, even in cases where the polygon name, or part of it, remains unchanged. **Citation:** FAO. 2025. Global Administrative Unit Layers (GAUL). [Accessed on [DD Month YYYY]]. https://data.apps.fao.org. Licence: CC-BY-4.0 **Contact points:** Resource Contact: [FAO-Data](mailto:FAO-Data@fao.org) Resource Contact: [FAO-Data](mailto:FAO-Data@fao.org) **Data lineage:** The overall GAUL methodology consists in a) collecting the best available data from most reliable sources, b) assemble national datasets into a common dataset by matching international boundaries with a reference authoritative dataset, i.e. the UN 2018, c) standardizing attributes to a common table of attributes, d) generating codes using GAUL Coding System, e) applying a topology and f) fill the metadata for each country. Detailed technical documentation is available **here**. **Resource constraints:** This work is made available under the Creative Commons Attribution-4.0 International license (**CC BY 4.0**). IMPORTANT – Read carefully the **Terms of Use** before using the digital data. By downloading the Global Administrative Unit Layers (GAUL) 2025 you agree to be bound by the terms and conditions contained in this document. **Online resources:** Download the data from the Google bucket GAUL 2025 Terms of Use GAUL 2025 L1 Metadata List of changes by country List of new assigned codes from GAUL 2024 List of deprecated codes from GAUL 2024 GAUL 2024 Technical Guidelines

The administrative boundaries dataset at level 2 (Sub-national level) is part of the Global Administrative Unit Layers (GAUL) dataset series which includes information on administrative units for all the countries in the world, providing a contribution to the standardization of the spatial dataset representing administrative units. The administrative boundaries at the level 2 dataset distinguishes Districts and equivalent. The GAUL maintains global layers with a unified coding system at country, first (e.g. departments), and second administrative levels (e.g. districts). The complete metadata reference for each country, along with the specific license or Terms of Use applicable at the country level, can be accessed **here**. **Data creation:** 2024-12-19 **Citation:** FAO. 2024. Global Administrative Unit Layers (GAUL). [Accessed on [DD Month YYYY]]. https://data.apps.fao.org/?lang=en. Licence: CC-BY-4.0 **Contact points:** Resource Contact: [FAO-Data](mailto:FAO-Data@fao.org) Metadata Contact: [FAO-Data](mailto:FAO-Data@fao.org) **Data lineage:** The overall GAUL methodology consists in a) collecting the best available data from most reliable sources, b) assemble national datasets into a common dataset by matching international boundaries with a reference authoritative dataset, i.e. the UN 2018, c) standardizing attributes to a common table of attributes, d) generating codes using GAUL Coding System, e) applying a topology and f) fill the metadata for each country. Detailed technical documentation is available **here**. **Resource constraints:** This work is made available under the Creative Commons Attribution-4.0 International license (**CC BY 4.0**). IMPORTANT – Read carefully the **Terms of Use** before using the digital data. By downloading the Global Administrative Unit Layers (GAUL) 2024 you agree to be bound by the terms and conditions contained in this document. **Online resources:** Download the data from the Google bucket GAUL 2024 Terms of Use GAUL 2024 L2 Metadata GAUL 2024 L2 ChangeLog GAUL 2024 Technical Guidelines GAUL L0 Codes 2024 - 2014

The administrative boundaries dataset at level 2 (Sub-national level) is part of the Global Administrative Unit Layers (GAUL 2025) dataset series which includes information on administrative units for all the countries in the world, providing a contribution to the standardization of the spatial dataset representing administrative units. The administrative boundaries at the level 2 dataset distinguishes States, Provinces, Departments and equivalent. The GAUL maintains global layers with a unified coding system at country, first (e.g. departments), and second administrative levels (e.g. districts). The complete metadata reference for each country, along with the specific license or Terms of Use applicable at the country level, can be accessed **here**. **Data publication:** 2026-05-21 **Supplemental Information:** GAUL 2025 underwent a thorough review of administrative boundaries. Sources and point of contacts were cross-checked, and original references were verified. This process resulted in several updates, which are described in detail in the [**changeLog**]( https://data.apps.fao.org/catalog/dataset/03bc8f0e-0d3d-4211-80b5-2e51b71c08d7/resource/99e8130d-0032-4e0a-a4d8-a87f782ac220/download/gaul_2025_l2_changelog.docx). As part of this revision, some codes were deprecated and new codes were assigned. The list of deprecated codes is available [**here**]( https://data.apps.fao.org/catalog/dataset/03bc8f0e-0d3d-4211-80b5-2e51b71c08d7/resource/73076010-dba7-4fc3-aa8d-93ed54da64d6/download/gaul_2025_l2_deprecated_codes.xlsx), while the list of new codes is available **here**. As explained in the technical documentation, changes in polygon geometry trigger the assignment of new codes, even in cases where the polygon name, or part of it, remains unchanged. **Citation:** FAO. 2025. Global Administrative Unit Layers (GAUL). [Accessed on [DD Month YYYY]]. https://data.apps.fao.org. Licence: CC-BY-4.0 **Contact points:** Resource Contact: [FAO-Data](mailto:FAO-Data@fao.org) Resource Contact: [FAO-Data](mailto:FAO-Data@fao.org) **Data lineage:** The overall GAUL methodology consists in a) collecting the best available data from most reliable sources, b) assemble national datasets into a common dataset by matching international boundaries with a reference authoritative dataset, i.e. the UN 2018, c) standardizing attributes to a common table of attributes, d) generating codes using GAUL Coding System, e) applying a topology and f) fill the metadata for each country. Detailed technical documentation is available **here**. **Resource constraints:** This work is made available under the Creative Commons Attribution-4.0 International license (**CC BY 4.0**). IMPORTANT – Read carefully the **Terms of Use** before using the digital data. By downloading the Global Administrative Unit Layers (GAUL) 2025 you agree to be bound by the terms and conditions contained in this document. **Online resources:** Download the data from the Google bucket GAUL 2025 Terms of Use GAUL 2025 L2 Metadata List of changes by country List of new assigned codes from GAUL 2024 List of deprecated codes from GAUL 2024 GAUL 2024 Technical Guidelines

This dataset contains the following administrative boundaries: ADM0, ADM1, ADM2. Produced and maintained since 2017, the geoBoundaries Global Database of Political Administrative Boundaries Database www.geoboundaries.org is an open license, standardized resource of boundaries (i.e., state, county) for every country in the world.

Boundaries of cadastral map sheets (fogli catastali), published by Regione Umbria. The data covers Italy.