Sierra Leone Administrative Boundaries for 4 Subnational Levels

Geospatial boundaries for Sierra Leone's administrative divisions, structured into four hierarchical levels. The dataset includes 5 Admin 1, 16 Admin 2, 167 Admin 3, and 1316 Admin 4 units. It was contributed and quality assured by OCHA organizations and is part of a global administrative boundaries collection.

Use Cases

• Map demographic or health indicators based on the four-level administrative hierarchy.
• Conduct spatial joins for humanitarian response planning based on the provided boundary polygons.
• Analyze regional trends in Sierra Leone using the defined Admin 1-4 units.
• Create gazetteer or location reference services based on the administrative division names and codes.

Strengths

• Explicitly defines 5, 16, 167, and 1316 units for Admin levels 1 through 4.
• Dataset was reviewed for accuracy and completeness on 30 October 2025.
• Available in multiple geospatial formats (GEOJSON, SHP, GEODATABASE) and a tabular format (XLSX).
• Part of a standardized global collection (COD-AB), suggesting consistent methodology.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific analytical needs.

Provenance

Source

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

Collection Method

Boundaries created by the source; dataset configured and published by OCHA FIS and HDX.

Time Range

Boundaries created 16 August 2017; dataset valid for use from 15 December 2023.

Freshness

Last updated 2026-03-10 09:05:42.440074; freshness should be verified.

Geography

Sierra Leone.