Region: The Western Isles
If you meant comparing Los Angeles' poverty rate to Appalachian-bordering states', some of them actually have a lower rate. Kentucky for instance only slightly better, but IIRC Tennessee and North Carolina are also better. Granted, some of the counties' poverty rate is much higher than LA's, and a large city like Nashville does have a bit higher poverty rate (like 18+ vs LA's ~17). And California as a whole has a lower rate.