Senegal Administrative Boundaries for 14 Regions, 46 Departments, and 125 Arrondissements

Senegal's subnational administrative boundaries structured into three hierarchical levels. The dataset includes 14 regions, 46 departments, and 125 arrondissements, contributed and quality-assured by OCHA humanitarian organizations. It was last reviewed for accuracy in October 2025 and is part of a global administrative boundaries collection.

Use Cases

• Create thematic maps for humanitarian response based on the three-level administrative hierarchy.
• Aggregate socioeconomic or demographic statistics to regional, departmental, or arrondissement levels.
• Perform spatial joins and analysis using the provided geospatial boundary files.
• Validate or update local gazetteer systems with official administrative unit names and codes.

Strengths

• Contains three clearly defined administrative levels with specific counts: 14 regions, 46 departments, and 125 arrondissements.
• Quality assured and published by authoritative humanitarian organizations (OCHA FIS, HDX).
• Dataset was reviewed for accuracy and completeness on 30 October 2025.
• Available in multiple standard geospatial formats (GEOJSON, SHP, GEODATABASE) and a tabular format (XLSX).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The underlying boundaries were created in April 2019, which may not reflect recent administrative changes.
• Row count and file size are unknown, which may limit suitability assessment for large-scale processing.

Provenance

Source

OCHA West and Central Africa (ROWCA), OCHA Field Information Services (FIS), and HDX.

Collection Method

Boundaries created by the source, configured, quality assured, and published by humanitarian organizations.

Time Range

Boundaries created 30 April 2019; dataset valid for use from 20 May 2024; reviewed 30 October 2025.

Freshness

Last updated 2026-03-10 09:05:37.449909; freshness should be verified against the source creation date of April 2019.

Geography

Senegal.