Closest of all is Emma Tillman, from Gibsonville, 2 mi away. John Isner is the most widely known, written about in 47 languages. Next door, the list for Burlington holds 33, Tequan Richmond first. Of the famous people on record, none was born in Elon.
From Wikidata and Wikipedia: people whose birthplace is Elon and whose English Wikipedia article agrees, ranked by how many Wikipedia languages cover each person. Nearby people are those born in a town within 35 miles; distances are town center to town center. People known mainly for crimes, and adult performers, aren’t listed. “The usual town” = everyone born in the towns gathered so far.