Part of Florida, homely US state (5)
I believe the answer is:
idaho
'us state' is the definition.
(I've seen this before)
'part of florida homely' is the wordplay.
'part of' indicates a hidden word.
'IDAHO' is hidden within 'florida homely'.
(Other definitions for idaho that I've seen before include "US state S. of Montana" , "found in America" , "State of northwest US" , "Rocky Mountain state" , "US state bordering Canada" .)