Revenue for Apple’s retail stores was US$4.1 billion for the June fiscal quarter, an increase of 17% year-over-year from the same period in 2011.

The stores sold 791,000 Macs. Almost half of those, according to Apple Chief Financial Officer Peter Oppenheimer, was — let’s say it together — were to new Mac customers.

Apple opened nine new stores during the quarter. There are now 373 stores — 123 of those are outside the U.S.

Oppenheimer says the average revenue per store was $11.1 million. There were 83 million visitors to the Apple retail stores during the June quarter, compared to 74 million during the year-ago period for an increase of 17%.