PARADISE, Calif. — Has anyone heard from Billy? Susan? Betty?

Their friends at the Ridgewood Mobile Home Park want to know.

Four days after a blaze called the Camp Fire ripped through the small town of Paradise, the sheriff’s office said that more than 200 residents are still missing. It is a staggering number in a place that as of Monday night had lost at least 42 people in what is now the deadliest and most destructive wildfire in state history.

When asked about his team’s progress in the search, Sheriff Kory Honea of Butte County said simply, “We have a lot of work to do.”