A person is counted if their country of birth is Iran, as recorded in each country’s census or population register.
Most figures come from Eurostat; Germany, the United Kingdom, Denmark, and Switzerland use their national statistics.
Source: Eurostat population by country of birth. Germany from Destatis Mikrozensus 2025. United Kingdom combined from ONS Census 2021 (England & Wales), NRS Scotland's Census 2022, and NISRA NI Census 2021. Denmark from the Statistics Denmark (DST) population register.
Source: Eurostat population by country of birth. Germany from Destatis Mikrozensus 2025. United Kingdom combined from ONS Census 2021 (England & Wales), NRS Scotland's Census 2022, and NISRA NI Census 2021. Denmark from the Statistics Denmark (DST) population register. Countries with fewer than 10,000 Iran-born residents are shown on the map but omitted from this ranking.
Source: Eurostat (Sweden, Netherlands, Austria, Italy, Norway, Finland) · Statistics Denmark register (Denmark; Eurostat’s series ends 2022) · ONS/NRS/NISRA censuses 2001, 2011, 2021/22 (United Kingdom, dotted) · INSEE census, narrower “immigré” definition, through 2019 (France, dashed) · BFS register (Switzerland, dashed). Germany is omitted: Eurostat publishes no Iran-born count for Germany — see the Germany pages.