Here's an interesting little fact: the Christiana Mall Apple store in Newark, Delaware sells more iPhones and any other Apple Store in the United States. As ABC news reports that's because Delaware has no sales tax so people can pick up iPhones and other Apple products there at a significant discount compared to the rest of the country. Because of the store's location customers will come from other cities like New York and New Jersey to shop there.
While Apple did not confirm that its Christiana Mall store sold the most iPhones, several employees working there did brag to ABC news that it did. "The only store that does more volume is the glass box on Manhattan's Fifth Avenue and that is open 24 hour