My maps were working fine and not crashing, but then at some point it started crashing every time I tried to type in the search box. I then began testing different things until I got it working again.
The thing that fixed it for me was disabling iCloud contacts sync. When I turned it off, I chose "delete from iphone" when asked. Maps work great now and I'm not crashing anymore. I am GUESSING it's more to do with a contact(s) having a location or information that makes Maps crash, so you might be able to find which one(s) is causing it. I just figured I'd report what I've found so far.
Let me know if you narrow this down any more!
The thing that fixed it for me was disabling iCloud contacts sync. When I turned it off, I chose "delete from iphone" when asked. Maps work great now and I'm not crashing anymore. I am GUESSING it's more to do with a contact(s) having a location or information that makes Maps crash, so you might be able to find which one(s) is causing it. I just figured I'd report what I've found so far.
Let me know if you narrow this down any more!