The number of applicants for the 13-16 June tournament eclipsed the previous best of 9,086 for the 2009 US Open at Bethpage Black.
“The fact that we have a record number of entries, from across the world, is a testament to both the great appeal of the US Open and the historic nature and grandeur of Merion Golf Club,” USGA executive director Mike Davis said in a statement.
The US Open, the second of the year’s four majors, will be held for a fifth time on the classic East Course at Merion. The most recent US Open staged there was in 1981, won by Australian David Graham.
American Webb Simpson will defend the title he clinched by one shot at Olympic Club outside San Francisco last year.