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What you should know about this indicator

  • UCDP groups countries into five regions by their number in Gleditsch and Ward's list of independent states: Europe (200–399), Africa (400–626), the Middle East (630–699), Asia (700–999) and the Americas (2–199).
  • Egypt (651) is part of the Middle East. The rest of North Africa (Morocco, Algeria, Tunisia, Libya and Sudan) is part of Africa.
  • UCDP calls its fifth region "Asia". We label it "Asia and Oceania" because it also includes countries such as Australia and Papua New Guinea.
World regions according to the Uppsala Conflict Data Program
Regions as defined by the Uppsala Conflict Data Program (UCDP).
Source
Uppsala Conflict Data Program – processed by Our World in Data
Last updated
January 1, 2023
Date range
2023–2023

Sources and processing

This data is based on the following sources

Uppsala Conflict Data Program – UCDP/PRIO Armed Conflict Dataset codebook

Retrieved on
October 13, 2026
Retrieved from
https://ucdp.uu.se/downloads/ucdpprio/ucdp-prio-acd-261.pdf

How we process data at Our World in Data

All data and visualizations on Our World in Data rely on data sourced from one or several original data providers. Preparing this original data involves several processing steps. Depending on the data, this can include standardizing country names and world region definitions, converting units, calculating derived indicators such as per capita measures, as well as adding or adapting metadata such as the name or the description given to an indicator.

At the link below you can find a detailed description of the structure of our data pipeline, including links to all the code used to prepare data across Our World in Data.

Read about our data pipeline
Notes on our processing step for this indicator

We assign each state in Gleditsch and Ward's list that existed in 1946 or later to its UCDP region. Gleditsch and Ward code 260 is West Germany until 1990 and reunified Germany since, so we assign Germany to Europe.

Reuse this work

  • All data produced by third-party providers and made available by Our World in Data are subject to the license terms from the original providers. Our work would not be possible without the data providers we rely on, so we ask you to always cite them appropriately (see below). This is crucial to allow data providers to continue doing their work, enhancing, maintaining and updating valuable data.
  • All data, visualizations, and code produced by Our World in Data are completely open access under the Creative Commons BY license. You have the permission to use, distribute, and reproduce these in any medium, provided the source and authors are credited.

Citations

How to cite this page

To cite this page overall, including any descriptions, FAQs or explanations of the data authored by Our World in Data, please use the following citation:

“Data Page: World regions according to the Uppsala Conflict Data Program”. Our World in Data (2026). Data adapted from Uppsala Conflict Data Program. Retrieved from https://archive.ourworldindata.org/20261013-235342/grapher/world-regions-according-to-ucdp.html [online resource] (archived on October 13, 2026).

How to cite this data

In-line citationIf you have limited space (e.g. in data visualizations), you can use this abbreviated in-line citation:

Uppsala Conflict Data Program – processed by Our World in Data

Full citation

Uppsala Conflict Data Program – processed by Our World in Data. “World regions according to the Uppsala Conflict Data Program” [dataset]. Uppsala Conflict Data Program, “UCDP/PRIO Armed Conflict Dataset codebook” [original data]. Retrieved October 13, 2026 from https://archive.ourworldindata.org/20261013-235342/grapher/world-regions-according-to-ucdp.html (archived on October 13, 2026).

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