| 95–100% | |
| 90–95% | |
| 50–55% | |
| 30–35% | |
| 10–20% | |
| 5–10% | |
| 4–5% | |
| 2–4% | |
| 1–2% | |
| < 1% |
| Islam by country |
|---|
 |
 Islam portal |
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Islam is the second largest religion in Belgium after Christianity. The exact number of Muslims in Belgium is unknown but various sources estimate that 4.0% to 7.6% of the country's population adheres to Islam. The first registered presence of Islam in Belgium was in 1829, but most Belgian Muslims are first-, second-, or third-generation immigrants that arrived after the 1960s.
- ^ "Muslim Population Growth in Europe Pew Research Center". 10 July 2024. Archived from the original on 10 July 2024.