Carter has yet to put a famous person on the list
No town in Montana lists more than Missoula, with 70. After Missoula, the next longest list in Montana is Billings’, with 65. Across Montana, 97 towns list someone born there.
Who’s listed here
Famous people come from Wikidata (people whose birthplace is Carter), checked against each person’s English Wikipedia article and ranked by how many Wikipedia languages cover them. Nobody born in Carter has passed that check yet, and nobody born within 35 miles is listed.
From Wikidata and Wikipedia: people whose birthplace is Carter 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.