No famous person yet from Rockport
No town in Illinois lists more than Alton, with 65. Champaign City Township has the second-longest list in Illinois, after Alton, with 64. 765 towns across Illinois can name a famous person born there.
Who’s listed here
Famous people come from Wikidata (people whose birthplace is Rockport), checked against each person’s English Wikipedia article and ranked by how many Wikipedia languages cover them. Nobody born in Rockport has passed that check yet, and nobody born within 35 miles is listed.
From Wikidata and Wikipedia: people whose birthplace is Rockport and whose English Wikipedia article agrees, ranked by how many Wikipedia languages cover each person. People known mainly for crimes, and adult performers, aren’t listed. “The usual town” = everyone born in the towns gathered so far.