Sweden uses population registers. A person is classified as Iranian-origin if they meet at least one of:
Source: Statistics Sweden (SCB) — Population Register, 2025
The second generation includes children with one Swedish-born and one Iran-born parent. Third-generation residents are not counted. Classification is from birth records, not self-reported ethnicity.
Source: Eurostat — Iran-born population stock, 1999–2025; gaps filled from Statistics Sweden, 1990 and 1995 from UN DESA
Source: Statistics Sweden (SCB) — Population by country of birth, 2024
Source: Statistics Sweden (SCB) — Population by country of birth, 2024