No famous person yet from Butte Valley
The longest list in California is Modesto’s, with 65 names. After Modesto, the next longest list in California is Alameda’s, with 64. Across California, 547 towns list someone born there.
Who’s listed here
Famous people come from Wikidata (people whose birthplace is Butte Valley), checked against each person’s English Wikipedia article and ranked by how many Wikipedia languages cover them. Nobody born in Butte Valley has passed that check yet, and nobody born within 35 miles is listed.
From Wikidata and Wikipedia: people whose birthplace is Butte Valley 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.