https://tiles.ciesin.columbia.edu
Last updated: May 29, 2026
Public URL: https://prod.ciesin.app/tiles/grid3/nga/GRID3_NGA.pmtiles
The GRID3 COD consolidated vector tiles include the following input layers:
The GRID3 NGA - Settlement Blocks v4.0 dataset consists of settlement block polygons with building count, block area, building density, settlement classification, and related attributes for Nigeria (NGA).
Derived from "GRID3 NGA - Settlement Extents v4.0" https://doi.org/10.7916/fr96-f546. Accessed 29 May 2026.
Geographic extent: Nigeria (2.68° to 14.68° E, 4.27° to 13.89° N)
Feature count: 2,558,865
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: polygon
- Compression: gzip (internal & tile)
- Zoom Levels: 13–14
- Map layer(s): GRID3-NGA-settlement-extents-v4-0
The GRID3 NGA - Settlement Extents v3.0 consists of a geographic representation of settlements in the Nigeria, in two forms: 1) settlement polygons, and 2) spatial points depicting the centroids of settled grid cells at 3-arc seconds (or ~100 meters) contained within settlement polygons. Both layers include attributes as described in the codebooks. Data inputs and methodology to derive the 2 layers is described in this document.
Derived from "GRID3 NGA - Settlement Extents v3.0" https://doi.org/10.7916/tbgr-4j86. Accessed 10 March 2026.
Geographic extent: Nigeria (2.68° to 14.68° E, 4.27° to 13.89° N)
Feature count: 745,191
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: polygon
- Compression: gzip (internal & tile)
- Zoom Levels: 0–14
- Map layer(s): settlement-extents
Attribution:
Center for Integrated Earth System Information (CIESIN), Columbia University. 2024. GRID3 NGA - Settlement Extents v3.0. New York: GRID3. https://doi.org/10.7916/tbgr-4j86. Accessed [DAY MONTH YEAR].
Terms of use:
Users are free to download, store, access, use, copy, adapt, transform, alter, arrange, build upon, distribute and transmit this work and any derivative works. Attribution of the source must be provided, and further distribution of this work or derived work must maintain the same terms of data use and license as set forth in this Terms of Use.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)
© 2024. The Trustees of Columbia University in the City of New York.
The GRID3 NGA - Settlement Extents v4.0 dataset consists of a geographic representation of settlements in Nigeria. Settlement extents are further delineated into settlement blocks nested within urban and small settlement areas, generated from integrated road, railway, river, settlement extent, building footprint, and remote-sensing inputs. Each block is enriched with morphological, environmental and building metrics.
Derived from "GRID3 NGA - Operational Wards v2.0" https://doi.org/10.7916/fr96-f546. Accessed 8 June 2026.
Geographic extent: Nigeria (2.68° to 14.68° E, 4.27° to 13.89° N)
Feature count: 745,191
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: polygon
- Compression: gzip (internal & tile)
- Zoom Levels: 0-16
- Map layer(s): GRID3-NGA-operational-wards-v2-0
Public URL: https://prod.ciesin.app/tiles/grid3/cod/GRID3_COD.pmtiles
The GRID3 COD consolidated vector tiles include the following input layers:
The GRID3 COD - Health Facilities v8.0 dataset consists of health facility points with name, location, health zone, and health area, among other attributes, for all the twenty-six provinces in the Democratic Republic of the Congo (COD).
This operational dataset has not been fully validated by government officials or ministries.
Derived from "GRID3 COD - Health Facilities v8.0" https://doi.org/10.7916/f1ft-y872. Accessed 10 March 2026.
Geographic extent: Democratic Republic of the Congo (12.29° to 31.27° E, -13.26° to 5.13° N)
Feature count: 38,049
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: point
- Compression: gzip (internal & tile)
- Zoom Levels: 0–8
- Map layer(s): GRID3-COD-health-facilities-v8-0
Attribution:
Center for Integrated Earth System Information (CIESIN), Columbia University, Ministère de la Santé Publique, Hygiène et Prévention, Democratic Republic of the Congo, and GRID3. 2025. GRID3 COD - Health Facilities v8.0. New York: GRID3. https://doi.org/10.7916/f1ft-y872 . Accessed .
Terms of use:
Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)
© 2025. The Trustees of Columbia University in the City of New York.
The GRID3 COD - Settlement Names v8.0 dataset consists of settlement points with name and attributes for all the twenty-six provinces in the Democratic Republic of the Congo (COD).
This operational dataset has not been fully validated by government officials or ministries.
Derived from "GRID3 COD - Settlement Names v8.0" https://doi.org/10.7916/qpnw-1c89. Accessed 10 March 2026.
Geographic extent: Democratic Republic of the Congo (12.22° to 31.26° E, -13.38° to 5.14° N)
Feature count: 127,942
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: point
- Compression: gzip (internal & tile)
- Zoom Levels: 0–8
- Map layer(s): GRID3-COD-settlement-names-v8-0
Attribution:
Center for Integrated Earth System Information (CIESIN), Columbia University, Ministère de la Santé Publique, Hygiène et Prévention, Democratic Republic of the Congo, and GRID3. 2025. GRID3 COD - Settlement Names v8.0. New York: GRID3. https://doi.org/10.7916/qpnw-1c89. Accessed .
Terms of use:
Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)
© 2025. The Trustees of Columbia University in the City of New York.
The GRID3 COD - Health Areas v8.0 dataset consists of health area polygons with health area name, health zone, and province attributes for all twenty-six provinces in the Democratic Republic of the Congo (COD). The dataset covers 517 health zones across 26 provinces.
Derived from "GRID3 COD - Health Areas v8.0" https://doi.org/10.7916/kcq9-7s03. Accessed 10 March 2026.
Geographic extent: Democratic Republic of the Congo (12.20° to 31.28° E, -13.46° to 5.39° N)
Feature count: 9,658
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: polygon
- Compression: gzip (internal & tile)
- Zoom Levels: 0–8
- Map layer(s): GRID3-COD-health-areas-v8-0
Attribution:
Center for Integrated Earth System Information (CIESIN), Columbia University, Ministère de la Santé Publique, Hygiène et Prévention, Democratic Republic of the Congo, and GRID3. 2025. GRID3 COD - Health Areas v8.0. New York: GRID3. https://doi.org/10.7916/kcq9-7s03. Accessed .
Terms of use:
Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)
© 2025. The Trustees of Columbia University in the City of New York.
The GRID3 COD - Health Zones v8.0 dataset consists of health zone boundary polygons with health zone name and province attributes for all twenty-six provinces in the Democratic Republic of the Congo (COD).
Derived from "GRID3 COD - Health Zones v8.0" https://doi.org/10.7916/asa4-jc67. Accessed 10 March 2026.
Geographic extent: Democratic Republic of the Congo (12.20° to 31.28° E, -13.46° to 5.39° N)
Feature count: 519
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: polygon
- Compression: gzip (internal & tile)
- Zoom Levels: 0–8
- Map layer(s): GRID3-COD-health-zones-v8-0
Attribution:
Center for Integrated Earth System Information (CIESIN), Columbia University, Ministère de la Santé Publique, Hygiène et Prévention, Democratic Republic of the Congo, and GRID3. 2025. GRID3 COD - Health Zones v8.0. New York: GRID3. https://doi.org/10.7916/asa4-jc67. Accessed .
Terms of use:
Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)
© 2025. The Trustees of Columbia University in the City of New York.
The GRID3 COD - Settlement Extents v3.1 consists of a geographic representation of settlements in the Democratic Republic of the Congo, in two forms: 1) settlement polygons, and 2) spatial points depicting the centroids of settled grid cells at 3-arc seconds (or ~100 meters) contained within settlement polygons.
Derived from "GRID3 COD - Settlement Extents v3.1" https://doi.org/10.7916/d6gy-yh28. Accessed 29 May 2026.
Geographic extent: Democratic Republic of the Congo (12.20° to 31.28° E, -13.44° to 5.25° N)
Feature count: 572,537
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: polygon
- Compression: gzip (internal & tile)
- Zoom Levels: 7–15
- Map layer(s): GRID3-COD-settlement-extents-v3-1
Attribution:
Center for International Earth Science Information Network (CIESIN), Columbia University. 2024. GRID3 COD - Settlement Extents v3.1. New York: GRID3. https://doi.org/10.7916/d6gy-yh28. Accessed [DAY MONTH YEAR].
Terms of use:
Users are free to download, store, access, use, copy, adapt, transform, alter, arrange, build upon, distribute and transmit this work and any derivative works. Attribution of the source must be provided, and further distribution of this work or derived work must maintain the same terms of data use and license as set forth in this Terms of Use.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)
© 2024. The Trustees of Columbia University in the City of New York.
Public URL: https://prod.ciesin.app/tiles/base.pmtiles
Global vector basemap derived from OpenStreetMap and Natural Earth data. Accessed from https://maps.protomaps.com/builds/ 28 April 2026. Protomaps basemap version 4.14.5
Source: © OpenStreetMap contributors (https://www.openstreetmap.org/©) Source: Natural Earth (https://www.naturalearthdata.com) Geographic extent: Global (-180° to 180°, -85.05° to 85.05°)
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: vector
- Compression: gzip (internal & tile)
- Zoom Levels: 0–15
- Map layer(s):
- earth — Land polygons with multilingual names (z0–z15)
- landcover — Natural landcover (z0–z7)
- landuse — Anthropogenic landuse (z2–z15)
- places — Toponyms (z1–z15)
- pois — Points of interest (z5–z15)
- roads — Road network with multilingual names (z3–z15)
- water — Linear and polygonal water features (z0–z15)
Attribution:
© OpenStreetMap contributors License: ODbL (Open Database License) (https://www.openstreetmap.org/copyright)
Public URL: https://prod.ciesin.app/tiles/overture/buildings_composite.pmtiles
Global building footprints from the Overture Maps Foundation, incorporating OpenStreetMap data. Generated using Overture Maps Planetiler profile (https://github.com/OvertureMaps/overture-tiles). Build date: May 20, 2026. <Z14 are collapsed to building centroids.
Source: © Overture Maps Foundation (https://overturemaps.org) Source: © OpenStreetMap contributors (https://www.openstreetmap.org/copyright) Geographic extent: Global (-180° to 180°, -85.05° to 85.05°)
Technical specifications:
- Tile Format: .mvt (Mapbox Vector Tiles)
- Geometry type: vector
- Compression: gzip (internal & tile)
- Zoom Levels: 5–14
- Map layer(s):
- building — Building footprints with height data; attributes: height, class, facade details, roof details, sources, version
- building_part — Building sub-parts (z14); attributes: height, building_id, facade details, roof details
Attribution:
© Overture Maps Foundation, © OpenStreetMap contributors License: CDLA-Permissive-2.0 (https://docs.overturemaps.org/attribution)
Public URL: https://prod.ciesin.app/tiles/terrain.pmtiles
30-meter resolution Digital Elevation Model (DEM) covering the Africa, provided by Mapterhorn. Used to render hillshade and dynamically generated vector contours in the application.
Source: Mapterhorn (https://mapterhorn.com) Geographic extent: Africa (-18.8° to 51.8° E, -35.4° to 37.5° N)
Technical specifications:
- Tile Format: .webp (raster DEM, Terrarium elevation encoding)
- Geometry type: raster
- Compression: internal gzip; tiles uncompressed
- Zoom Levels: 0–12
- Tile size: 256×256 pixels
Attribution:
© Mapterhorn (https://mapterhorn.com/attribution) License: COPERNICUS full, free and open license
© OpenStreetMap contributors, Overture Maps Foundation, CIESIN Columbia University, Mapterhorn & COPERNICUS GLO-30, 2026.
OpenStreetMap (Protomaps basemap) License: ODbL (Open Database License) Attribution Required: Yes
Overture Maps License: CDLA-Permissive-2.0 Attribution Required: Yes
GRID3 COD Geospatial Base Layers License: CC BY 4.0 Attribution Required: Yes
GRID3 NGA Geospatial Base Layers License: CC BY 4.0 Attribution Required: Yes
Mapterhorn 30m Terrain License: COPERNICUS GLO-30 ©2025 Attribution Required: Yes
Users who would like to provide feedback about this data product, or encounter apparent errors or misstatements, are encouraged to contact CIESIN Columbia University at info@ciesin.columbia.edu.