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Historical GIS Data Portal

Explore time series boundary data by country

Explore Datasets

A Cartographic Archive of the World

This archive provides access to administrative-territorial histories of countries and their associated attributes in GIS format for several polities. Data is researched and transformed according to industry standards. To access the data for preview, please use the contact page to issue a request.

800+
Years of History Mapped
3,500+
Hand-traced Polygons
100%
Of Features backed up by Sources

Geospatial Features

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Temporal Navigation

Navigate through time-series data to visualize boundary changes across decades.

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Attribute Data

Access metadata including historical names, dates, administrative levels, technical specifications, and sources.

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Ethical Standards

Ikonen has a "no AI" policy when creating data. All geospatial analysis is performed according to the ethical code found at https://www.gisci.org/.

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Living documents

GIS Histories are living datasets. Each is kept up to date according to current and planned territorial changes, newly discovered sources, and accuracy assessments.

Database Icon Data

Country Description Status Actions
Ready
Denmark
Administrative boundaries of Denmark from 1800-2024. Available View Map
Ready
Jordan
Administrative boundaries of Jordan from 1921-2024. Available View Map
Ready
United Kingdom
Administrative boundaries of the United Kingdom from 1814-2024. Available View Map
Ready
Moldova
Administrative boundaries of Moldova from 1796-2024. Preview Available View Map
Ready
New Zealand
Administrative boundaries of New Zealand from 1841-2024. Available View Map
Ready
Sweden
Administrative boundaries of Sweden from 1634-2024. Available View Map
Ready
Turkey
Administrative boundaries of Turkey from 1923-2024. Available View Map
Ready
United States
Administrative boundaries of the United States from 1783-2024. Available View Map

Dataset Details

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