At least one report put the crowd at about 5,000 to 7,000 people , with a more precise estimate of 8,647 for Trump’s speech last night. Another account quoted Trump claiming 45,000 , but that claim was not supported by available reports or images from the event.

What that means

The number depends on whether you mean Trump’s own claim or outside estimates. Public reporting suggests the crowd was well under 10,000 rather than tens of thousands.

Bottom line

If you want the best single estimate from the reporting I found, use roughly 8,600 attendees.