The Short Version
The 1.3 million figure is well-supported as the total number of Syrians who have come to Jordan since 2011, according to the Jordanian government, ACAPS, UNESCO, and other credible sources. However, this figure includes both UNHCR-registered refugees (~396,000–404,000 as of early 2026) and an estimated 640,000 unregistered individuals. Significant voluntary returns to Syria since late 2024 mean the current population is substantially lower than the cumulative total the claim implies.